Marquesses of Kildare (1761)
- Other titles: Earl of Kildare (1316), Earl of Offaly (1761), Viscount Leinster, of Taplow in the County of Buckingham (GB 1747) and Lord of Offaly (c. 1193–?)
- James FitzGerald, 1st Marquess of Kildare (1722–1773) was created Duke of Leinster in 1766
- George FitzGerald, Earl of Offaly (1748–1765), eldest son of the 1st Marquess
Read more about this topic: Duke Of Leinster