He was born circa 1650. His father was Francisco Baez de Benavides Lopez, and his mother was Isabel Martinez Guajardo Navarro.
He married Francisca de los Reyes Ponce.
Maria Baez de Benavides, born 1680. She married Capt. Blas Canales Montemayor, son of Juan Canales and Gertrudis de Montemayor.