Thomas Howard, 4th Duke of Norfolk, married as his first wife Mary FitzAlan, who, after the death of her brother Henry in 1556, became heiress to the Arundel estates of her father Henry FitzAlan, 19th Earl of Arundel. Her son was the above-mentioned Philip Howard, 13th Earl of Arundel. It is from this marriage that the present Duke of Norfolk takes his surname of FitzAlan-Howard and why his seat is Arundel Castle. There have also been several notable cadet branches; those existing to this day include the Howards of Effingham, Howards of Carlisle, Howards of Suffolk and Howards of Penrith. The former three are earldoms, and the latter a barony.