House of Trastámara

Cadet Branches
House of Noronha
Counts of Vila Real, Acoutim
and Valença
Marquises of Vila Real
Dukes of Caminha
Issued from Alfonso Enríquez, Count of Gijon and Noreña, illegitimate son of Henry II of Castile
House of Trastámara-Aragon
Kings of Aragon, Majorca
and Sicily
Issued from Ferdinand I of Aragon, younger son of John I of Castile

Personal Arms
John I of Castile
King of Castile and Leon
Arms as pretender to the throne of Portugal
1383-1385
John I of Castile
Alternative arms variant as pretender to the throne of Porugal
Infante Fadrique de Castilla
Duke of Benavente
Illegitimate son of Henry II of Castile
Infante Enrique de Castilla
Duke of Medina Sidonia
Illegitimate son of Henry II of Castile
Joanna the Mad
Queen of Castile, Leon, Aragon, Sicily and Naples
Daughter and heiress of Isabella I of Castile and Ferdinand II of Aragon