On the Indigenous Homeland: What Proto-Salish Vocabulary Reveals About Indigenous History in Canada and the US

Plant names, animal words, and the linguistic evidence that points to the coastal origins of the Salish language family

The Salish Sea, a body of water that includes the Strait of Georgia, the Strait of Juan de Fuca, and Puget Sound, is the ancestral home and highway for thousands of Indigenous Peoples.

My grandmother was born in 1930, and by the time I came into her life as a young child, she carried within her the living memory of a world that few outsiders understood. She had grown up surrounded by her parents, her grandparents, and her great-grandparents, all of them fluent speakers of the Squamish language. When I was small and restless, she discovered old recordings of our elders giving short language lessons. She bought me a tape player, placed it in my hands, and sent me outside to listen before I could run off to play or disappear into my video games.

I did not understand then what she was giving me. It was only years later that I came to see how profoundly that simple gesture had shaped the person I would become. Those early moments, listening to voices from a time I had never known, sparked something that would remain with me for life: an unshakeable pride in and connection to my ancestral language. That connection eventually led me to become a speaker myself.

As an adult, I found myself drawn deeper into the Squamish language. I became fascinated by its structure, its history, and how it related to the languages of our neighbours. I spent time explaining to others what seems obvious once you know it but strange before you do: that Squamish, Halkomelem, and Sechelt are three entirely distinct languages, each with its own grammar and soundscape. Yes, they belong to the same Salishan language family. Yes, they are related. But no, they are not mutually intelligible. You cannot hear one and understand the other. You would need translators to move between them.

That realization led me to a question that seemed simple on its surface but opened into something profound: Where did the Salishan languages come from? Where, in the deep past, was the home from which all these distinct languages grew?

The Salishan World

Map showing various languages in the broader Salishan language family on the Northwest Pacific Coast across the border between Canada and the United States. Source: Wikimedia.

The Salishan language family encompasses about twenty-three distinct but related languages. These languages were traditionally spoken across a vast territory that stretched from southern British Columbia down through Washington and Idaho, into western Montana, and as far south as northern Oregon. If you were to map that geography and compare it to a place most people know, it would be roughly the size of Ireland.

These languages differ from one another in significant ways. Yet they share something essential. All of them employ a wide range of consonant sounds. All of them build words in complex, intricate ways. And none of them use prefixes the way English does. To understand how different Salishan is from the languages most North Americans speak, consider the Indo-European language family: the largest language family in the world, encompassing English, Spanish, French, Hindi, Russian, and hundreds of others. All of those diverse languages trace back to a single ancestor spoken somewhere in prehistory. The Salishan family works in much the same way, except that its languages are far older in their divergence and infinitely less familiar to outsiders.

Linguists have sorted the Salishan languages into five main branches. There is Central Coast Salish, which includes Halkomelem, Squamish, Lushootseed, and Saanich. There is Tsamosan, spoken once across the Olympic Peninsula by the Upper and Lower Chehalis and the Quinault peoples. There is Interior Salish, encompassing Nlaka’pamux, Secwepemctsin, Okanagan-Colville, and Spokane-Kalispel. There is Bella Coola (Nuxalk), a highly distinctive northern outlier. And there is Tillamook, an extinct southern coastal outlier once spoken in Oregon.

Each of these branches, linguists believe, descended from a single ancestral language. They call it Proto-Salish. "Proto" means first, foremost, or earliest. A language that existed thousands of years ago and gave birth to all the languages that came after.

Understanding where that language originated means understanding more than just words and grammar. It means understanding the deep relationship between people and the land that shaped the cultural and linguistic geography of the entire Northwest Coast.

The Old Story

In 1905, Franz Boas, the so-called father of Western anthropology, put forward an idea that would dominate thinking for generations. The Salish peoples, he argued, had migrated from the interior toward the coast. They had moved outward from the dry plateaus, and in doing so, they had displaced earlier coastal groups like the Wakashan speakers. This narrative fit perfectly with the intellectual fashion of the early twentieth century, when scholars saw migrations and invasions as the great engines of prehistoric change (Boas 1905, 1910).

But ideas, like languages, evolve. As the decades passed, new evidence began to accumulate. Linguists uncovered it. Archaeologists uncovered it. Ethnographers studied it and found it wanting. By the 1960s, scholars like Wayne Suttles and William Elmendorf had begun using linguistic diversity as a kind of historical tool. If you could map where languages differed most from one another, they reasoned, you could find where they began. Their work suggested something contrary to everything Boas had proposed: the original homeland of the Salish languages was coastal, likely centred around the lower Fraser River and northern Puget Sound (Suttles & Elmendorf 1963). The Salish, it seemed, had not come from the interior at all.

A Linguistic Detective Story

The real breakthrough came from M. Dale Kinkade of the University of British Columbia. Kinkade was interested in a method called lexical reconstruction, a technique that takes modern words from many languages and traces them backward, rebuilding the ancient words that gave birth to them. But Kinkade approached this work with unusual rigour. He examined every single one of the twenty-three Salishan languages. He was conservative in his reconstructions, making only the most obvious observations. He would posit a word as belonging to Proto-Salish only if it appeared in at least two of the five major branches of the family. This meant that when he said a word was ancient, he could be confident he was right.

In his 1990 paper “Prehistory of Salishan Languages,” Kinkade made an elegant argument. If scholars could reconstruct the names of plants and animals that existed in Proto-Salish, they could infer the kind of landscape those ancient speakers lived in. If your ancestors had words for seaweed, horse clams, and salmonberries, then your ancestors lived where those things grew. Language, in this sense, becomes a form of archaeology. It becomes a way to dig down through time and uncover the ecology of memory (Kinkade 1990).

Kinkade also understood another crucial principle: borrowing. Languages that live near each other tend to share words, and that sharing can mislead you about where a language family originated. Two nearby groups may use the same word not because they inherited it from a common ancestor, but because they traded. To guard against this trap, Kinkade had a rule. If a word appeared only in languages that were geographically close to each other and in regular contact, he would not count it as belonging to Proto-Salish. He knew, for instance, that Lushootseed speakers on the coast had regular contact with Columbian Salish speakers in the interior. He had linguistic evidence of this exchange: Lushootseed had borrowed interior words for whitefish and sockeye salmon, while Columbian had borrowed coastal words for humpback salmon and butter clams. These borrowings did not tell him where the homeland was. Only words that appeared in geographically distant branches, languages with no reasonable history of contact, could tell him that story.

Kinkade compared vocabulary across all twenty-three Salishan languages. He worked backward through the linguistic data and reconstructed over one hundred and forty plant and animal names that must have existed in Proto-Salish. The pattern that emerged was unmistakable. Most of the oldest shared words, the words that appeared across many different descendant languages and distant branches, referred to coastal species. Words for seaweed. Words for shellfish. Words for harbour seal and whale. Words for salmon and berries that grew near the water.

By contrast, few reconstructable words described species found only inland. Lodgepole pine. Trout. The words that would have referred to the dry interior plateaus east of the Cascades simply were not there. The linguistic evidence pointed in one direction only: the Pacific coast, not the interior.

Kinkade’s findings echoed conclusions that Laurence Thompson had drawn in 1979 through a separate survey of the entire language family. Thompson noted that the deepest linguistic splits among the Salish languages appeared along the coast, especially around the Fraser and Puget Sound corridor. These deep divisions were a strong indicator of an ancient centre, a place where the language had existed for so long that it had fractured and diversified. That place was the coast (Thompson 1979).

The Evidence of Things

Among the most convincing evidence was the word for shellfish. Kinkade could reconstruct names for multiple kinds of clams: littleneck clams, cockles, and horse clams. This was the crucial detail. There is only one shellfish found in the interior. One. But the coast was full of them. The very existence of multiple clam names in Proto-Salish was almost definitive proof of coastal origins.

Similarly, Kinkade could reconstruct at least two, possibly three, names for different kinds of ferns. Ferns were barely named in Interior Salish languages. The speakers of those inland tongues seemed to have almost no use for fern vocabulary. But on the coast, where ferns were abundant and useful, the Proto-Salish speakers had developed multiple names for them. The bracken fern, the sword fern, the wood fern, all had traceable ancestral names that pointed back to the coast.

There was something else remarkable here. One of the interior languages, when it had inherited the word for horse clam from Proto-Salish, had not kept that meaning. Instead, the word had shifted. It came to mean snail, a smaller shelled creature. This made sense only if you imagined the following: a coastal people with a word for horse clams migrated inland. In the new landscape, far from the sea, they would have forgotten the horse clam. But they would have remembered the word. And one day, seeing a snail, they would have thought: this creature also has a shell that cannot fully retract. Perhaps this is the snail we call by that old word. The semantic shift could only move in one direction. You did not start by naming snails in the interior and then decide to call seashore clams by the same word. The coast was the source.

The Kelp Highway

Recent theories from archaeologists and marine ecologists have added another layer to this understanding. The research suggests something remarkable: that kelp-rich shorelines formed a continuous, highly productive highway for maritime foragers. This kelp highway stretched from Northeast Asia all the way down the Pacific coast to the Pacific Northwest. Such shorelines, it appears, were likely accessible to human travellers as far back as sixteen thousand or fifteen thousand years ago (Erlandson et al. 2007). If this is true, then the Pacific coast was not an empty frontier when Proto-Salish speakers lived there. It was a rich and well-travelled world, filled with the abundance that language preserves.

Mapping the Homeland

Map showing the historic areas where various Coast Salish languages were spoken. Source: Wikimedia.

Drawing together linguistic evidence, ecological knowledge, and archaeological findings, Kinkade proposed a specific location for the Proto-Salish homeland. It lay south of the lower Fraser River, in the region between today’s Vancouver and the Skagit River in Washington State. This region, bounded by the Strait of Georgia, Puget Sound, and the Cascade Mountains, offered both marine abundance and mountain resources. It was a place where the species preserved in Proto-Salish vocabulary would all have flourished (Kinkade 1990; Suttles 1987).

But Kinkade was even more precise than this. He looked at which species did not appear in which languages, and from that absence, he could narrow the zone further. Vancouver Island lacked bobcats, chipmunks, coyotes, fishers, mountain goats, and porcupines. Since Proto-Salish had words for all of these animals, Vancouver Island could not have been part of the original homeland. Moving north, the coastal area beyond the Fraser River also lacked several of these species. That region, too, was excluded. In the south, porcupines and lynx did not extend as far down as the southern Puget Sound. So the homeland had a northern and southern boundary.

“The homeland thus delimited for the Proto-Salish would extend from the Fraser River southward at least to the Skagit River, and possibly as far south as the Stillaguamish or Skykomish River,” Kinkade wrote. “From west to east, their territory would have extended from the Strait of Georgia and Admiralty Inlet to the Cascade Mountains.”

The archaeological record supported this conclusion. When Charles Borden excavated sites in the Fraser Delta in 1970, he found continuous coastal occupation layers that extended back more than four thousand years. More recently, excavations at the Porteau Cove Rock Shelter in Howe Sound revealed evidence of human activity spanning from nine thousand seven hundred years ago to approximately nine thousand five hundred years before present (Reimer 2012). These were old settlements. These were places where people had lived for generations upon generations.

Expansion and Change

From that coastal centre, Proto-Salish-speaking peoples began to move outward. Some moved inland, pushing through the Fraser Canyon and up the Thompson River valley. Over time, as they adapted to new landscapes and lost contact with their coastal kin, their language changed. These inland migrations gave rise to what we now call the Interior Salish languages: Nlaka’pamux, Secwepemctsin, Okanagan-Colville, and Spokane-Kalispel. What is striking about these interior languages is how similar they are to one another. They share structural features that are closer than you would observe among, say, the Romance languages of Europe. This structural homogeneity suggested something important to Kinkade: the migration into the interior was recent. (Kinkade 1990; Hayden 1997).

Other groups moved southward, following the waters of Puget Sound and establishing themselves in the Chehalis and Cowlitz river valleys. They too developed new languages from the Proto-Salish root. Others moved northward, some perhaps travelling as far as Bella Coola, whose vocabulary still carries traces of both coastal and interior origins.

Bella Coola presented a puzzle. Most scholars assumed that the Bella Coola were simply a northern extension of coastal Salish. But when Kinkade examined their vocabulary for local plants and animals, something unexpected emerged. The Bella Coola had borrowed many of their words for coastal species from neighbouring Wakashan languages. Harbour seal and seagull appeared in native Salish form, yes, but the clam names and the names of saltwater fish and sea life had come from the Wakashan language family. This was odd. If the Bella Coola had been on the coast for thousands of years, why would they be missing the inherited Salish names for coastal creatures? Why would they have borrowed them from their Wakashan neighbours?

Kinkade proposed something different. Perhaps the Bella Coola had an interior origin. Perhaps they had lived in the interior at some point, picked up interior vocabulary, and only later moved to the coast. This would explain why they had interior words for creatures like porcupines, fishers, and hummingbirds. It would explain why they lacked deep Salish vocabulary for the sea. This theory is not certain. Perhaps they moved up river valleys to reach the coast, trading with interior peoples along the way. But the linguistic evidence suggested a more complex history than simply being an extension northward of coastal settlement (Nater 1977).

The Coast as Origin

This is the story the evidence tells us. It is a story that overturns a narrative that had stood for more than a century. The ancient Salish peoples were not newcomers to the sea. They were people of the coast from the beginning. The languages, stories, and ecological knowledge that defined their world radiated outward from the bountiful coastal regions and inlets of the Fraser and Puget Sound area thousands of years ago.

Modern archaeology confirms what the languages have always been saying. Many of the oldest, continuously occupied village sites in the Pacific Northwest, dating back over nine thousand years, lie within the very region that Kinkade identified as the Proto-Salish homeland. They are places where our ancestors lived and raised children and told stories. They are places where people developed the languages that would eventually carry them across a landscape and through the centuries.

What is remarkable about this conclusion is not just that it solved a puzzle that had confused scholars for decades. Listening to language itself solved the puzzle. By paying attention to which words survived, which ones changed meaning, which ones were borrowed, and which ones were not, Kinkade could read the story of our people’s movements through time. The words themselves contained memory. They were geological layers of sound and meaning.

When my grandmother gave me that tape player, when she taught me to listen to the voices of our elders, she was connecting me to that ancient coast. Every word I learned was rooted in a specific place, a specific ecology, and a specific memory that went back further than written history. I did not know then that I was listening to echoes of the Fraser River and Puget Sound, to the voices of people who had known that land for thousands of years, who had named its creatures and plants and waters in their own language.

But I know it now. And that knowledge influences everything about who I am today.

References

Boas, Franz. 1905. The Mythology of the Bella Coola Indians. Memoirs of the American Museum of Natural History, 2(2). New York: G.E. Stechert.

Boas, Franz. 1910. Tsimshian Mythology. 31st Annual Report of the Bureau of American Ethnology. Washington, D.C.: Smithsonian Institution.

Borden, Charles E. 1970. “Cultural Phases of the Fraser Delta Region.” In Archaeology in British Columbia: New Discoveries, edited by R.L. Carlson, pp. 19–37. Vancouver: B.C. Provincial Museum.

Elmendorf, William W., and Wayne Suttles. 1963. “Linguistic Evidence for Salish Prehistory.” International Journal of American Linguistics 29(3): 206–209.

Erlandson, Jon M., Michael H. Graham, Bruce J. Bourque, Debra Corbett, James A. Estes, and Robert S. Steneck. 2007. “The Kelp Highway Hypothesis: Marine Ecology, the Coastal Migration Theory, and the Peopling of the Americas.” Journal of Island and Coastal Archaeology 2(2): 161–174.

Hayden, Brian. 1997. The Pithouses of Keatley Creek. New York: Harcourt Brace College Publishers.

Kinkade, M. Dale. 1990. “Prehistory of Salishan Languages.” In Handbook of North American Indians, Vol. 7: Northwest Coast, edited by Wayne Suttles, pp. 9–16. Washington, D.C.: Smithsonian Institution.

Nater, Hank F. 1977. The Bella Coola Language. Ottawa: National Museum of Man, Mercury Series, Canadian Ethnology Service Paper No. 41.

Reimer, Rudy. 2012. The mountains and rocks are forever: lithics and landscapes of Skwxwú7mesh Uxwumixw Territory. Simon Fraser University.

Suttles, Wayne. 1987. Coast Salish Essays. Seattle: University of Washington Press.

Thompson, Laurence C. 1979. “Salishan and the Northwest.” In The Languages of Native America: Historical and Comparative Assessment, edited by Lyle Campbell and Marianne Mithun, pp. 692–765. Austin: University of Texas Press.