On May 5, 1758, Antonio Ortega a soldier of the garrison states that he sold to Tomas Ortega, his brother, a part of some agricultural land, near Tomas's house, for the price of 60 pesos. The lands boundaries are: east lands of Juan Valencia, west land of Juana wife of Urbano Montaño - sister of the vendor and purchaser, north the river of the villa and south the public road and boundary of Urbano. Witnessed by Juan Felipe de Rivera, Bernardo Sena, Francisco Guerrero, Lucas Moya and Carlos Jose Perez de Mirabal.
So this tells me that Antonio, Tomas and Juana (Ortega) are siblings.
Antonio has a daughter named Petra or Petrona that married Juan Dominguez, which is the line I'm researching.
References: Spanish Archives of New Mexico, Series I, Twitchell 651
©Henrietta M. Christmas