Mary Carolyn Campbell McCreery (née Cuyler, formerly Lady Grey-Egerton) (23 December 1871 – 25 November 1958) was an American socialite.
Her father, a West Point graduate and engineer, fought for the Union Army in the U.S. Civil War.
[5] On 4 January 1893, May was married to Sir Philip Grey Egerton, 12th Baronet in London.
[14][c] His maternal aunt, Mary Swearingen, was the wife of Supreme Court Justice Stephen Johnson Field,[13][24] and his nephew was Gen. Sir Richard McCreery, Commander of the British Eighth Army.
[10] During the 2014 to 2015 exhibition at London's National Portrait Gallery, May was featured among the high-profile American heiresses to marry into British aristocracy.