Ygnacio Ortega (1764–1829) was the son of José Francisco Ortega. Ygnacio became a soldier and married Gertrudis Arce (born 1772). In the 1790 California census, he is listed as mayordomo (foreman) at the Mission San Gabriel. After Ygnacio's death in 1833, with Alta California under Mexican rule, Governor José Figueroa divided Rancho Ysidro among his three children (and their spouses).