He married Ines Rodriguez.
He married Maria de Esquivel. It was his second marriage.
He married Juana Porcallo de la Cerda, daughter of _Porcallo in 1571. He was 41 years old, and the bride was 16 years old. It was his third marriage.
Inez Rodriguez de Montemayor, born 1549. She married Baltasar Castaño de Sosa.
Diego (el Mozo) de Montemayor, born 1560. He married Elvira de Renteria, daughter of Juan Fernandez de Castro and Mayor de Renteria.
Estefana de Montemayor y Porcallo, born 1572. She married Alberto Canto, del, son of Sebastian Martins do Canto and Maria Dias Vieira.
Passage to the new world in 1548 (18 years old). Founder of Monterrey, governor of Nuevo Leon
He died before 29 Apr 1613. He was 83 years old.