An officer in the Mexican army bequeathed his name to the crescent-shaped basin once kwn as Castro s Valley. Driven to ruin by squatters, drought, and gambling debts, he sold a portion of his cattle ranch to Methodist minister Zachariah Hughes, who built a church and school in what is w Crow Canyon. The one-room, redwood school Hughes christened Eden Vale educated about 50 children until a group from the burgeoning town to the south, Hayward s, stole it by wagon in the dead of night. Undaunted, Castro Valley, delineated from its w friendly neighbors by hills, Lake Chabot, and an independent spirit, built and fully supported its own Redwood School. It has w developed into one of the most populous unincorporated areas in the United States.