I saw the different death records for Cisneros in Familysearch.or/Texas death certificates. As usual you find a lot of individuals with the same names and it gets confusing. I also saw the different public members trees in Ancestry.com. If you don't know the individuals who posted these Cisneros/Galvan trees you may want to contact them to get additional information.
There are quite a few on-line records for Matamoros Tam. Mexico but I could not find a marriage record on Servando and Guadalupe. I searched from about 1888 to 1901. It is possible that they married elsewhere before moving to Matamoros but I did see a lot of other Cisneros and Chapas. The marriage petition records for their particular time period are missing.
There are many baptism records for Matamoros and I started searching from 1891 tos 1897. Lots of Cisneros but no parents named Servando and Guadalupe. I will show you how to pickup from where I left off Contact me at : firstname.lastname@example.org and I will get you started. Gloria