_. Mary Joan Birkbeck, who died 8 January, 2016, aged 84, was a scion of that landed family, and a descendant of King William IV by his mistress, the actress Dorothea Jordan,
She was born in 1931, a daughter of Oliver Birkbeck (d 1952), by his wife the former Lady Joan FitzClarence (1904-92), who was a sister of the 5th Earl of Munster (which peerage is now extinct).
Miss Birkbeck was the winning trainer of the Waterloo Cup in 1973.
The funeral is at St Andrew's Church, Little Massingham, Norfolk, Thursday 28 January, 2016.
KING WILLIAM IV = Dorothea Jordan
GEORGE FITZCLARENCE, 1ST EARL OF MUNSTER = Mary Wyndham
WILLIAM FITZCLARENCE, 2nd EARL OF MUNSTER = Wilhelmina Kennedy-Erskine
HON HAROLD FITZCLARENCE = Frances Keppel (descended from Charles II)
LADY JOAN FITZCLARENCE = (1) Oliver Birkbeck and (2) Henry Cator
MARY JOAN BIRKBECK