death records and last will

I have found a lead for my grandmother who was from zacatecas and I need help following thru with this lead:

En la casa no. 94 de la oclava del Reloj el Sr. Pbre D.J. Guadalupe Chaven V.P. assitio a siete de enero de mil novecientos diecisiete al matrimonio fue (o que) en extremio contrajeron Juan Brena y Ma. Gonzales.

My questions are (1) which parish would this address been in so that I can check for his death record, (2) since apparently he was on his death bed and since they were both from Zac, Zacatecas, where would his last will have been recorded in Zac.or Distrito Federal and are they online.

Have been looking for this lead for a while and do appreciate any assistance even though DF is not part of this forum.

Anita