Hello, I have just started to do research with respect to my husband's family. His grandfather is Genaro Perez Serrano born in Hermosillo in 1892. The record of his baptism is in the Familysearch, Mexico, Catholic Church Records, Sonora, Hermosillo, La Asuncion, Baptismos 1891-1894, image 81. His birth name was J. Genaro Ysidro Serrano but on all paperwork he used Genaro Perez Serrano. His father was Genaro Serrano, his mother Sara Contreras, reputedly born in Stockton. He had a number of siblings, some of whom I have documented. Could Sista Refugio in Image 403 of Bautismos 1886-1889 be his sister/your ancestor?