Princess Victoria Alice (Alice) of Battenberg (1885-1969) became a religious mystic. She was placed in a mental institution by her husband, Prince Andrew of Greece, in 1930. After three years she gained her release but understandably did not return to Prince Andrew. She lived in Athens during WWII working with the poor. Alice later established an order of Greek Orthodox nursing nuns. She was deaf and read lips in 3 languages.
Alice Battenberg was the mother of the Queen's husband - Prince Philip. Alice was near deaf and a religious zealot. As the years went by, she began to have visions that she was Christ's bride. She was declared a paranoid schizophrenic and committed to an asylum by force in 1930. Alice is Prince William's great grandmother.