The mission was founded on All Saints' Day November 1, 1776, by Spanish Catholics of the Franciscan Order. Named for Giovanni da Capistrano, a 15th century theologian and "warrior priest" who resided in the Abruzzo region of Italy, San Juan Capistrano has the distinction of being home to the oldest building in California still in use, a chapel built in 1782; known alternately as "Serra's Chapel" and "Father Serra's Church,=."