Help With Ortiz de San Pedro of Tlaltenango

I just found an entry while searching the early Durango records for a Lazaro Ortiz de San Pedro marrying a Maria de Chaide and Lazaro identifies his parents as Lazaro Ortiz de San Pedro and Maria Esquivel of Zacatecas.

Image 192/352, Defunciones 1622-1634, El Sagrario, Victoria de Durango, dated February 11, 1627: Vele a Lazaro de San Pedro hijo legitimo de Lazaro Ortiz de San Pedro y Maria de Esquivel veciana de Zacatecas aviendo precidido los amonestraciones y lo demos necessario? fueron los padrinos Isabel de Garete y Francisco de Avendano digo y lo vele con Maria de Chaide hija legitima de Juan de Chaide y de Francisca de Valle vecinos de esta ciudad.

I am hoping somebody out there familiar with the early Tlaltenango records can help me learn more about Lazaro Ortiz de San Pedro or Maria Esquivel. I'm guessing this would place the birth of Lazaro (the elder one) at around 1570-80. I saw some postings from several years ago and it appeared Arturo Ramos was very knowledgeable about the early families. Also, has anybody figured out why Ortiz has "de San Pedro" attached? Was there a place known as San Pedro in Spain?

Thank you.