KnowraSebastian of PortugalLinked fromLinked fromThe 9 pages that link to Sebastian of Portugal, each with the reason it gives.All 9Broader topic 3Related 6House of AvizBroader topic: His disappearance triggered the succession crisis that ended Aviz rule.Portuguese monarchyBroader topic: His disappearance left the crown vulnerable to competing dynastic claims.History of PortugalBroader topic: The crisis after his death led to the Iberian Union.