Mary Angela FitzRoy (born 1919) (1919–1984) Parents Grace Zoë Guinness Robert Fitzroy, 2nd Viscount Daventry Children Charles Dermot FitzRoy Musker Fiona Zoe Musker Robert Anthony Musker Belinda Musker Oliver Musker Siblings Katherine Susan FitzRoy Olivia FitzRoy Amelia Grace FitzRoy Barbara Helen FitzRoy Partners Richard Mayon-White Dermot Musker