I believe I finally found my ancestors?! (The Villagrana's of Zacatecas)

I had found a public family tree under the name De la Garza. I found a Felix Villagrana in this tree. If anyone here thinks they might me connected to these people here, let me know! I will put what information I found here:

Francisco Villagrana: b. unknown d. unknown
Spouse: Manuela Espino: b. unknown d. unknown
Son: Nabor Villagrana

Nabor Villagrana: b. unknown d. unknown
Spouse: Maria Trinidad Rivera: b. unknown d. unknown
Son: Guillermo Villagrana

Guillermo Villagrana: b. 1837 d. 1880
Spouse: Maria De La Luz Macias: b. 26 June 1840 d. unknown
Children: 8

Felix (-)
Jose Maria (-)
Adeliado (1859-)
Nicolas (1861-)
Maria Josefa (1866-)
Leonardo (1867-1955)
Martina (1870-)
Felipa Del Refugio (1872-)

NOTES: Some of these names were passed down the family line.

On Felix Villagrana death certificate-it states his name as being "Villagrana" though in the 1920's, he signed his name as "Villagran." It also shows his birth date as being 12 July 1850. If he is the same Felix in the above family tree, his mother would have been only 10 yrs old?! And his father only 13?!

Though the name of Felix Villagrana's father is unknown on the death certificate, his mother's name was listed as: Unknown(Maria) This is just speculation, but I wonder if she was the Maria De La Luz Macias mentioned above?

The public tree acknowledges that Felix and Jose Maria Villagrana were the youngest, though their birth dates were not listed.

Again, if anyone has any more info, let me know! :)

-Alexis Villagrana