Frederick of Aragon, Count of Luna illegitimate son of Martin I the Young, King of Sicily and contender for the crown of Aragon (1400–1438) Parents Tarsia Rizzari Martin I of Sicily Children Siblings Martin of Aragon, Heir of Sicily Peter of Aragon, Heir of Sicily Yolande of Aragon, Countess of Niebla Partners Violant Lluïsa de Mur