Pedro was the son of unknown parents. The date and place of his birth have not been found.
His wife was Isotta Ginevra del Balzo. They were married, but the date and place have not been found. They had no known children.
Note 1
Inigo de Guevara, Marchese di Vasto Conte di Ariano, di Apici e di Potenza & Covella Sanseverino