In July 1793, Alexander Mackenzie reached the Pacific coast after crossing North America by land. His party had followed rivers and trails through the continent, relying on local guidance when the route ahead proved dangerous. The crossing was the first recorded by a European north of Mexico. It was also part of a larger commercial ambition: Mackenzie was a leading figure in the North West Company, whose fur-trading interests he hoped to extend westwards.

From Stornoway to the fur trade

Mackenzie was born in Stornoway, on the Isle of Lewis, around 1764, into a family connected with the island’s mercantile life. His mother died when he was young. In 1774, he sailed with his father to New York to join an uncle. During the American War of Independence, his father and uncle joined the King’s Royal Regiment of New York. Mackenzie was sent to Montreal for his safety, and by 1779 had secured an apprenticeship with Finlay, Gregory & Co., a prominent fur-trading firm.

The company merged with the North West Company in 1787. Two years later, Mackenzie was sent to Lake Athabasca to replace the trader Peter Pond. He was among the founders of Fort Chipewyan in 1788 and learned from Pond that local First Nations people understood the rivers in the area to flow north-west. Mackenzie’s work in the fur trade thus placed him in a position to pursue a route across the continent, but his expeditions depended on geographical knowledge that was already held by Indigenous communities.

The river that led north

On 3 July 1789, Mackenzie set out by canoe from Lake Athabasca on a river known to the Dene as the Dehcho. He hoped it would lead to Cook Inlet in Alaska and offer a passage towards the Pacific. On 14 July, he reached the Arctic Ocean instead. The river later took his name. The journey did not find the route he sought, but it established the course of a major waterway and sharpened the question that would drive his next expedition: how could the company reach the western coast?

Mackenzie returned to Great Britain in 1791 to study advances in measuring longitude. He was back in Canada the following year, after the Nootka Crisis with Spain, and set out again. On 10 October 1792, he left Fort Chipewyan with his cousin Alexander MacKay, two Indigenous guides, six Canadian voyageurs and a dog. Travelling by the Pine and Peace rivers, the party reached a fork in the Peace River on 1 November. They built a winter station there, later known as Fort Fork.

Crossing to the Pacific

The party resumed its journey on 9 May 1793, following the Peace River and crossing the Great Divide. They reached the upper Fraser River, but local people warned Mackenzie that the Fraser Canyon was unnavigable and that the route was unsafe. They directed the party towards the West Road River, over the Coast Mountains and down the Bella Coola River. Mackenzie reached the Pacific coast at Bella Coola, on North Bentinck Arm, on 20 July 1793.

His aim was to continue west to the open ocean, but hostility from Heiltsuk people stopped the party. Mackenzie recorded his arrival on a rock near the water’s edge using vermilion mixed with bear grease. The message gave the date as 22 July, two days after his arrival. Mackenzie and his companions then turned back, reaching Fort Chipewyan on 24 August. His crossing was the first recorded transcontinental crossing of North America north of Mexico by a European, twelve years before Lewis and Clark’s expedition.

The route was not a solitary triumph over empty wilderness. Mackenzie’s party travelled through lands inhabited by Indigenous peoples, and local guidance shaped the decisive change of route away from the Fraser Canyon. That dependence is essential to the story of how the crossing became possible. In his journal, Mackenzie also made the first recorded account of the Carrier language, an Athabaskan language.

Trade, publication and public life

After returning to Montreal, Mackenzie became one of the North West Company’s leading partners. In 1799, he left the company and went to London to lobby for Canadian fur-trading interests. He returned to Canada the next year and helped form the New North West Company, also known as the XY Company. His ambitions included extending the company’s operations into western Canada and selling furs in China. In London, he presented the British government with a plan for a permanent fishery and fur trade on the continent’s west coast. The government took no action, anticipating conflict with Napoleon.

Mackenzie’s journals of his 1789 and 1793 journeys were published in 1801 as Voyages from Montreal, on the River St. Laurence, through the Continent of North America, to the Frozen and Pacific Oceans in the Years 1789 and 1793. The account set out the journeys and their geography for readers beyond the fur trade. He was knighted in 1802 and later served as a member for Huntingdon County in the Legislature of Lower Canada from 1804 to 1808.

Later years and the name on the map

Mackenzie returned to Scotland in 1812 and married Geddes Mackenzie. They had two sons and a daughter, and lived alternately at Avoch and in London. He died in 1820 at about the age of 56 and was buried at Avoch on the Black Isle. His explorations became attached to places across western Canada: the Mackenzie River, Mount Sir Alexander, Mackenzie Bay and the municipality of Mackenzie, British Columbia, bear his name.

The mark he left on the coast also acquired a later history. The message Mackenzie painted on the rock was permanently inscribed by surveyors in 1923. The site is now Sir Alexander Mackenzie Provincial Park and is designated the First Crossing of North America National Historic Site. These commemorations preserve the crossing’s place in public memory, while the journeys themselves remain bound up with the people and territories through which Mackenzie travelled.

Why Sir Alexander Mackenzie deserves a place in British Legacy

Mackenzie’s place in British Legacy rests on a precise achievement: in 1793, he led the first recorded European crossing of North America by land north of Mexico, reaching the Pacific coast at Bella Coola. His earlier expedition to the Arctic and his later account of both journeys made his work significant to the geographical knowledge available to European readers. The publication of his journals in 1801 carried the record beyond the trading posts and routes where the expeditions began. His knighthood and later public service in Lower Canada show how exploration, commerce and political life intersected in his career.

That legacy should not be told as a story of discovery in an uninhabited landscape. Mackenzie’s expeditions served the commercial aims of the North West Company, and the successful Pacific route depended on guidance from local people who understood the terrain. Their advice helped his party avoid an unsafe route and reach the coast. Recognising that contribution makes the achievement clearer, not smaller: it explains how the crossing happened and places it in the human geography of the region. The river, mountain, bay, town and historic site that bear Mackenzie’s name keep the journeys visible, while his journals preserve a record of their routes and encounters. His story connects Scottish origins with a consequential chapter in the history of exploration and trade in Canada.

Sources

Alexander Mackenzie (explorer), revision 1376500685

Adapted in part from Alexander Mackenzie (explorer) by Wikipedia contributors, under CC BY-SA 4.0. Text has been edited and combined with the existing article; this adapted text is shared under the same licence. Contributor history.