John Beresford, 7th Marquess of Waterford

John Charles de la Poer Beresford, 7th Marquess of Waterford (6 January 1901 – 25 September 1934), styled Earl of Tyrone until 1911, was an Irish peer and soldier.

Biography
Beresford was the eldest son of Henry de la Poer Beresford, 6th Marquess of Waterford, and Lady Beatrix Frances Petty-Fitzmaurice, daughter of Henry Petty-FitzMaurice, 5th Marquess of Lansdowne, Viceroy and Governor-General of Canada and India, respectively. He was educated at Winchester College and Trinity College, Cambridge. In 1924, he was commissioned as a Lieutenant in the Royal Regiment of Horse Guards.

Lord Waterford died in a shooting accident in the gun room at the family seat, Curraghmore House, near Portlaw, County Waterford, aged only 33. He was succeeded in the Marquessate by his infant son.

Family
Lord Waterford married Juliet Mary Lindsay (1904–1987), daughter of Major David Balcarres Lindsay, on 14 October 1930 at St George's, Hanover Square. They had two children:
 * John Hubert de la Poer Beresford (14 July 1933 – 12 February 2015), who would eventually succeed as the 8th Marquess of Waterford
 * Lord Patrick Tristam de la Poer Beresford (16 June 1934 – 18 March 2020)