Prince (Shahzada) Pierre-Muhammad Sayd (1475-1522) was the third and youngest son of Prince (Shahzada) and Sultan Djem Sayd (1459-1495) of the Ottoman Empire and the Noble Elena-Marie dei Conti Orsini di Pitigliano, daughter of Count Niccolò di Pitigliano and Guglielmina (a commoner of humble birth). He spent his tender years in Egypt with his parents and sister. The family later moved to Rhodes Island after an invitation by the Grand Master of the place. He was the brother of Prince (Shahzada) Abdullah Sayd, Prince (Shahzada) Oghuz-Khan Sayd and Princess (Shahzadi) Aisha Sayd.