PICO, Maria Antonia Tomasa was born in Bef. 1776 in Rio Piastla, San Javier de Cabazan, Sonora, Mexico; was christened in Bef. 1776 in Rio Piastla, San Javier de Cabazan, Sonora, Mexico; died in May 1783 in Los Angeles, Alta California; was buried on 22 May 1783 in Mission San Gabriel, Alta California.