Mayorazgo Juan Alonso Bracho de la Sienra

Juan Alonso's father was Juan Alonso Diaz Bracho and his mother was Maria Catalina del Corro y Barreda.  His paternal grandparents were Juan Alonso Bracho and Catalina Sanchez de Cos y Villegas. He had a sister named Juana.

‌Juan Alonso and Maria were married in a religious ceremony in Carranceja.  They had a son named Juan Alonso.