Conversation so far:
When was Ferdinand Magellan born?
in around 1480.
Who was his family?
Province.
He was the son of Rodrigo de Magalhaes, Alcaide-Mor of Aveiro (1433-1500, son of Pedro Afonso de Magalhaes.

Question: Who were his siblings if any?
Self-contained rewrite: Who were Ferdinand Magellan's siblings if any?