You didn't give much information on this post, so I went looking at your message history. You have a nice one on the Anzulda forum.I think I've found Calixtro, listed as Carlos.Through various census records on sons you gave, the surname gets spelled every which way, but lose.
1880 census Grajeno, Hidalgo Co, TX:
Category: Name;Relationship to head of household; Marital Status; Gender; Race; Age; Birthplace; Occupation; Father's Birthplace; Mother's Birthplace.
Ebaristea ANSUALDOWifeMFemaleW50TXKeeps HouseTXTX
Pedro ANSUALDOSonSMaleW18TXFarm LaborTXTX
I can't find a match on the 1900 census.But, by 1910 census Hidalgo Co, TX:
Ansulda, Lazaro, hd, 45, ?, b MX
" Euristea, mother, ?5, wid, 7 ch, 7 lvg, b MX
Garcia, Carmen, sister, 29, ?, b TX
" Guadalupe, daughter, 5, b TX (probably "dau" of Carmen)
plus two nieces, surname I can't read.
Handwriting not real clear on name of mother of Lazaro, but I'm sure it is the same lady as the above 1880 census.Previous page is Ramon, 54 b MX, wife Josefa and their children. So, it looks like the same family.
1870 census Hidalgo Co, TX:
Ansaldoa, Calistro, 45, b MX - land $1000 - personal $150
" Abarista, 37, b MX
" Ramon, 11, b MX
" Pedro, 9, b MX
" Lazaro, 3, b MX
" Liberate, 9/12, b TX, b Sep
Garcia, ?usto, 8, b TX (male) at school
From this you can tell within a couple of years when they left Mexico and came to TX.Also, he owned land, so you should be able to find him on land records for Hidalgo Co, TX.
You say married name is Magallen, but not who had that married name.And the town is Granjeno, no El on the front.
Go up and click on My GenForum, click on Wars, click on U.S.-Mexican War and post your query there regarding how to find records etc for your ancestors.
Happy Hunting (^_^)