Recently, I co-wrote an article on Embudo (now Dixon), NM, which had a land record for the Apodaca family and it noted a Jul. Leon. Many of the Leon's are sometimes using the name Brito and they seem to interchange, without giving us, the researchers, any type of clues as to why. For the most part, most of these named individuals are in the Santa Fe area, here are a few more stragglers and I'm not sure how they might be related.
A record dated, Jan 23, 1803 for a Jose Maria, a Ute Indian in the care of Julian Lucero and Barbara Cisneros with a godparent of Jose Antonio Leon from Abiquiu.
Another record for a Maria Ynes Leon, who is getting baptized at San Juan de los Caballeros church on July 12, 1812, age 7 days and the daughter of Jose Antonio Leon and Maria Manuela Aragon, godparents: Juan de Jesus Romero and Maria Encarnacion Romero. They are from Joya.
On April 7, 1825, a five day old Maria Ricarda Martin was baptized, the daughter of Felipe Martin and Juana Maria Leon, godparents: Jose Antonio Borrego and Paula Sanchez.
In the Picuris records, there is one lady named Josefa Ponce de Leon, which makes me wonder if she has something to do with these area Leon people. As early as April 1787, she is a godmother to a Romero child being baptized.
Another record at Picuris is for Miguel Antonio Leon, baptized on June 5, 1810, son of Jose Antonio Leon and Manuela Aragon.
More research is needed to see if there is any type of connection or if this is a new family in New Mexico and we keep trying to make them part of one larger family.
References: San Juan de los Caballeros, Baptisms; Picuris Baptisms; HGRC Journal "Herencia" 20:1, Jan 2012, with Jose Nestor Salazar (Embudo-Some Loose Ends)