Porto Seguro
Marquis of Porto Seguro (in Portuguese "Marquês de Porto Seguro") was a Portuguese title of nobility created by a royal decree of king Philip III of Portugal (aka Philipe IV of Spain) dated from 8 April 1627, and granted to D. Afonso of Lencastre, 2nd son of Álvaro of Lencastre, 3rd Duke of Aveiro.