[5][6] Around the same time, Eleanor's sister Isabel of Viseu married Fernando II of Braganza, head of the most powerful noble house in Portugal.

Later, in 1484, the Queen's brother Diogo, Duke of Viseu was accused of leading a conspiracy against the crown and was stabbed to death in 1484 by the king himself.

[14] In 1484, at the site of water that healed of her of an unknown affliction while traveling from Óbidos to Batalha, the queen ordered a hospital built so that others could enjoy the same relief.

John wanted his illegitimate son Jorge to succeed him but Eleanor was intent on securing succession for her younger brother Manuel.

[21][22] Following bitter disputes with Eleanor and a failed petition to Rome to have Jorge legitimized, John finally recognized Manuel as his heir in his will a few weeks before his death.

[23][24] After her brother Manuel I succeeded to the throne in 1495, Eleanor moved to the palace of Xabregas, where she hosted the royal court and continued to be socially active.

[citation needed] She also founded the convent Madre de Deus (1509), considered a great architectural work, where she spent many of her later years, dressed almost as a nun.