Three AI tools, one 1866 Mexican parish register, and the family 
that a U.S. census reduced to a single word: México.

Brian traces composite ancestor Esteban Vasquez through two Arizona 
census records where birthplace reads only "México" and no 
naturalization record exists. The research pivots to FamilySearch's 
Mexico-Sonora Catholic Church records, a collection covering roughly 
21 specific parishes from the mid-1600s onward, and finds the 1866 
baptismal entry that names his parents and the mother's maiden 
surname no American record ever recorded.

Three tools, each matched to the job: Perplexity and Comet map the 
Mexican archive landscape before the search begins. Gemini via AI 
Studio transcribes a handwritten Spanish-language baptismal record. 
Claude correlates the transcription against census data and 
identifies the parents, the two-surname naming convention, and the 
compadrazgo (godparent) network as the next research thread.

Copy-paste prompts for all three tools. Clear explanations of 
FamilySearch's Sonora Catholic records, the Registro Civil, and how 
to navigate Mexican archives when your census says only "born Mexico."

This episode is for you if you search: AI tools for Hispanic 
genealogy, FamilySearch Mexico Catholic records, Sonora parish 
registers, Spanish handwriting transcription AI, how to find Mexican 
ancestors, Registro Civil research, two-surname genealogy research.

For Australian and UK listeners: the same three-tool workflow applies 
to Catholic parish research in Ireland, England, and Scotland through 
Findmypast's Catholic Heritage Archive and the National Library of 
Ireland at registers.nli.ie.

Full Breakthrough. The 1866 baptismal record names the parents. The 
research moves forward.

Advanced prompts and the full Companion Guide at ancestorsandai.com.

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