Gerald FitzGerald, 5th Duke of Leinster (16 August 1851 – 1 December 1893) was an Anglo-Irish peer.
Leinster was born in Dublin, Ireland, the son of the 4th Duke of Leinster and Lady Caroline Sutherland-Leveson-Gower, daughter of the 2nd Duke of Sutherland.
He married Lady Hermione Wilhelmina Duncombe (30 March 1864 – Mentone, France, 19 March 1895), daughter of the 1st Earl of Feversham, in London on 17 January 1884.
[1] She died of tuberculosis at age 30.
[2]: 64–65 The Leinsters had the following children: After the 5th Duke's death of typhoid fever, his stamp collection, which contained around ten thousand pieces, was bequeathed to the Dublin Museum of Science and Art.