John FitzGerald, 18th Earl of Kildare

John Holles FitzGerald, 18th Earl of Kildare (1661 – 9 November 1707), styled Lord Offaly until 1664, was an Irish peer.

He is an ancestor of United States President John F. Kennedy.

[1] Kildare was returned to the English House of Commons for Tregony in 1694, a seat he only held until the following year.

They had one child, Henry FitzGerald, Lord Offaly (1683–1684), who died as an infant.

After Mary's death in November 1683, aged 21, Kildare married secondly, Lady Elizabeth, daughter of Richard Jones, 1st Earl of Ranelagh, on 12 June 1684.