Lady Mary Rachel Pepys, DCVO (née Fitzalan-Howard, 27 June 1905 – 17 August 1992) was an English courtier from the Howard family.

Lady Mary was born at Norfolk House, St James's Square, the eldest child of Henry Fitzalan-Howard, 15th Duke of Norfolk (1847–1917), and his second wife, Gwendolen Constable-Maxwell,[1] who was a peeress in her own right as 12th Lady Herries of Terregles.

She died in 1992, aged 87 at St George's Retreat, a nursing home run by Augustinian sisters near Burgess Hill, West Sussex.

[3] Her funeral was held at Arundel Cathedral and attended by two of the Duchess's children, Princess Alexandra and Prince Michael of Kent.

This biography of a peer, peeress or noble of the United Kingdom, or one or more of its constituent countries, is a stub.