In 1825, the Hudson's Bay Company established a major trading post just north of today's Portland, Oregon. British fur trappers and hunters then used the Siskiyou Trail to travel throughout northern California. The leader of a further French scientific expedition to northern California, Eugene Duflot de Mofras, wrote in 1840 ""...it is evident that California will belong to whatever nation chooses to send there a man-of-war and two hundred men"." By the 1830s, a significant number of non-"Californios" had immigrated to northern California. Chief among these was John Sutter, a European immigrant from Switzerland, who was granted centered on the area of today's Sacramento.