Alexander Penrose Forbes Erskine (1881-1925) (1881–1925) Parents Walter Erskine, 11th Earl of Mar Mary Anne Forbes Children David Alexander John Erskine Archibald Walter Forbes Erskine Siblings Walter Erskine, 12th Earl of Mar Lady Alice Maud Mary Erskine Lady Louisa Frances Erskine Lady Mary Erskine William Erskine Lady Constance Elise Erskine Lady Frances Elizabeth Erskine Lady Elyne Mary Erskine Partners Irene Annette Campbell