Lady Jean Erskine (born 1649) (1649–1695) Parents John Erskine, 21st Earl of Mar Jean Mackenzie Children William Cunningham, 12th Earl of Glencairn Siblings Lady Barbara Erskine Charles Erskine, 22nd Earl of Mar Lady Marie Erskine Lady Sophia Erskine Partners John Cuninghame, 11th Earl of Glencairn