Deposition
That same year, Pedro managed to gain enough support to force the king to relinquish control of the government and he became Prince Regent in 1668. Afonso was exiled to the island of Terceira in the Azores for seven years, returning to mainland Portugal shortly before he died at Sintra in 1683.
His trial is the basis of João Mário Grilo's 1990 film, The King's Trial (O Processo do Rei).
Read more about this topic: Afonso VI Of Portugal