The only known survivor of the Tonquin's…

The only known survivor of the Tonquin's crew is Joseachal, who arrives back at Fort Astoria with the assistance of prominent Lower Chinookan noble Comcomly.

His account is the only one detailing the fate of the Tonquin.

This puts the occupants of Fort Astoria in a tough position, having no access to seaborne transport.

David Thompson, arriving at the partially constructed fort on July 14, two months after the Tonquin, becomes the first European to navigate the entire length of the Columbia River.

Thompson and a group of Astorians begin to journey up the river.