Sinclair, Prewett Fuller, mountain man (c. 1803-c. 1882). Born probably in Tennessee, he was a younger brother of Alexander Sinclair and with him joined the Bean party at Fort Smith, Arkansas, in 1830 for a Rocky Mountain trapping expedition. Prewett apparently remained in the mountains until 1837 when he became a partner in Fort Davy Crockett, Brown's Hole, Colorado. He went to California in 1843, joined Fremont briefly in 1846, then settled at Corralitos, Santa Cruz County becoming a fairly prominent pioneer and businessman. There he died.