DE ROS, Baroness (Engl., 1264), Mary Frances Dawson. Premier Baroness of England; only child of Dudley Charles FitzGerald De Ros, 24th Baron. K.P., K.C.V.O., and his 1st wife, Lady Elizabeth Egerton (d. 1892), dau. of the 2nd Earl of Wilton, P.C., G.C.H.: b. 31st July, 1854; s. her father, 30th April, 1907; m. 2nd Oct., 1878, 3rd Earl of Dartrey. and has issue three daus. Res.: 22 Wellington Court, Knightsbridge, S.W.; Old Court, Strangford, Co. Down.