Ann Fortune FitzRoy, Duchess of Grafton, GCVO, JP (née Smith; 24 February 1920 – 3 December 2021) was a British courtier who served as Mistress of the Robes to Queen Elizabeth II from 1967 until her death in 2021.

She was born on 24 February 1920 to Captain Evan Cadogan Eric Smith MC, of Lower Ashfold, Slaugham, Sussex, and his wife Beatrice Helen (née Williams).

[8] Her husband was succeeded as duke by their grandson, Henry FitzRoy, Viscount Ipswich, since their elder son died in 2009.

[11][2][12] She was a Lady of the Bedchamber to Queen Elizabeth II between 1953 and 1966, being appointed shortly before the coronation, and served as Mistress of the Robes from 1967 until her death in 2021.

[1][13][14] She accompanied the Queen on numerous overseas visits including Nigeria in 1956, France in 1972, Morocco in 1980 and Russia in 1994.