I found a immigration record for my gg grandfather Doroteo Zapata on Ancestry he was 28 in Zaragoza, Coahuila and the time of immigration was 1917. Its says on the back of the card "Wife is Petra Flores 27, now in Zaragoza with 6 children.
Mar 9/17 or could be 19 see card Petra Flores pp7"
I cannot locate this card for Petra Flores or find really anything on them. Petra's parents were Gabriel Flores and Teresa Alderete. and Doroteo's were Atilano Zapata and Lucia de Luna