URSUA Chabes, Luiz Joseph, c. 1730

I'm hoping someone can help me find the baptismal date of: Luiz Joseph URSUA Chabes, c. 1730, español, originario y vecino de la Hacienda de San Bartolome, Aguascalientes, Ags. hijo legitimo de Juan ORSUA Chabes y Cayetana Maria CHABES Albares. [Luiz is aka Jossef Luiz de URCUA; Luiz Jossef VRSUA, VRZUA, HORZUA, etc.]

Luiz' known siblings: Maximiliana Antonia, 1715; Olaya, 1716; Maria, 1719; Monica Barbara, 1722; Ma. Antonia Cornelia, 1729; Lorenzo Joaquin, 1737. A tentative sibling: Maria de San Juan, wife of Francisco ROMO-DE VIVAR.

His first marriage: to Maria Raphaela Rita PONSE De Alba, mulata, hija legitima de Nicolas PONZE y Lorenza DE ALBA. 20 Apr 1750, La Asuncion, Ags, Ags, 5 known children

His second marriage: to Maria Seledonia de los Dolores MASIAS Gonsales, española, originaria y vecina de Ags en la Hacienda de San Bartolome, hija legitima de Christobal MASIAS Gomes y Gertrudis GONSALES. 6 Sep 1758, La Asuncion, Ags, Ags, 9 known children.

I've found over 15 ways that URSUA is spelled in the IGI, which makes this family extremely difficult to track, as anyone with URSUA in their lines already knows. Any help with Luiz would be very much appreciated.

Gloria D.