the closely related fitzmaurice barons and later earls of kerry continue in the male line with the current petty-fitzmaurice marquesses of lansdowne, but they descend from john fitzgerald, 1st baron desmond's nephew, thomas fitzmaurice, 1st baron of kerry, son of his brother maurice fitzthomas. thus in fact they represent a "sister" branch to the fitzgeralds of desmond. however this technically makes them slightly closer to the fitzgeralds of desmond than either are to the offaly-kildare-leinster geraldines, represented by the modern dukes of leinster, who descend from gerald fitzmaurice, 1st lord of offaly, uncle of the 1st baron desmond.