Cerralvo, Nuevo Leon, Mexico was founded as early as the 1590′s but the church and civil records were either lost or destroyed up until 1761. As Mr. Garmendia states, this means that the documents up to eight generations or more are forever gone.
In his book Vecinos de Cerralvo Mr. Garmendia compiled the names of people that where from Cerralvo from 1630 to 1760. He obtained them from every surrounding town’s archive or church records.
If your research has lead you to Cerralvo during this time period this book is worth checking out.
The University of Texas Pan American has a copy and if you would like you cna buy the booka t http://www.borderlandsbooks.com for $45.00.