Regency
In 1742 Maria Anna took over power as regent after her husband suffered a stroke, which left him partially paralyzed. When John V died on 31 July 1750 she gave up power to their eldest son Joseph I of Portugal.
She died while in residence in the Palace of Belém in 1754. After her death, she was buried in Lisbon, but her heart was brought to Vienna and buried there in the imperial crypt.
Read more about this topic: Maria Anna Of Austria