He married Mary FitzGerald, daughter of Hon. Robert FitzGerald, son of
The 16th Earl of Kildare and Lady Jane Boyle, on 23 July 1684. They had three children: •
Joshua Allen, 2nd Viscount Allen (1685–1742) • Hon. Richard A. Allen b. bet. 1687 – 1697, died 1745; he married Dorothy Greene, daughter of Major Samuel Greene of Killaghy,
County Tipperary, and had issue, including the 4th and 5th Viscounts • Hon. Robert Allen (died 1741): he married Frances Johnson, daughter of
Robert Johnson, Baron of the
Court of Exchequer (Ireland) and Margaret Dixon of
Calverstown, County Kildare, and had five children, including two surviving daughters, Mary and Frances. ==References==