I just uploaded 36 Juarez individuals on my GEDCOM Tree here at NuestrosRanchos;

Joseph de Leon Family Tree

Hope this helps you

Jose Carlos de Leon

Lorenzo, forgive me but I think you're from the Cayetano Juarez line?  If you are then I have your line back to abt 1730 on Rootsweb.com.  I just updated today.  My file is called Mexico and then put in Cayetano Juarez, then go to pedigree in text form.  You are related to el Capitan Miguel Caldera through his sisters child.
There are a couple of people in Nuestrosranchos who live in Jerez and do genealogy. I'm not sure what they charge but they should be able to find land records for you.  Maybe the group can give you their names, they slip my mind right this second.
My e-mail has changed from longsjourney@hotmail.com to longsjourney@yahoo.com so I lost my files on hotmail when they decided I wasn't me!
hope this is of help to you
Linda Castanon-Long in B.C.

________________________________
From: "lorenzocarrillo94@yahoo.com"
To: research@lists.nuestrosranchos.org
Sent: Monday, October 3, 2011 3:26 PM
Subject: [Nuestros Ranchos] Los Juarez

I descend directly from the Juarez line that founded and owns the rancho Los Juarez in. Jerez, Zacatecas.I am currently only 3 generations back in my lineage and am still interested in finding more.  I am looking to see if anyone can help me find any pictures or stories of the rancho or any land records to the ranch. Any and all help/ suggestions are appreciated :) thanks,Lorenzo Carrillo .