House of Trastámara
Alfonso of Aragon (1481 – 18 August 1500), Duke of Bisceglie and Prince of Salerno of the House of Trastámara, was the illegitimate son of Alfonso II King of Naples and his mistress Trogia Gazzela. His father, cousin of Ferdinand II King of Aragon, abdicated in favour of his legitimate son Ferdinand II of Naples.