João dan saudara-saudaranya Duarte, Pedro, Henrique dan Fernando, adik Isabel dan saudara tiri Afonso, merupakan apa yang secara tradisional disebut oleh para sejarahwan Portugis sebagai 'generasi termasyur' (Ínclita Geração) Bersama saudara-saudaranya, Infante João berpartisipasi dalam penaklukan Ceuta (1415) dan dianugerahi gelar kebangsawanan oleh ayahandanya.
John and his brothers Edward, Peter, Henry and Ferdinand, sister Isabella and half-brother Afonso, constitute what Portuguese historians have traditionally labelled the 'illustrious generation' (Ínclita Geração) With his brothers, Infante John participated in the conquest of Ceuta (1415) and was knighted by his father in the aftermath.WikiMatrix WikiMatrix