See also

John BERESFORD's parents: Henry de la Poer BERESFORD (1875-1911) and Beatrix Frances PETTY-FITZMAURICE (1877-1953)
John BERESFORD's siblings: Blanche Maud de la Poer BERESFORD (c. 1898-1940), Katherine Nora de la Poer BERESFORD (1899-c. 1991), Beatrix Patricia de la Poer BERESFORD (1902-1986), William Mostyn de la Poer BERESFORD (1905-1973) and Hugh Tristam de la Poer BERESFORD (1908-1941)

Family of John Charles de la Poer BERESFORD and Juliet Mary LINDSAY

Husband:
John Charles de la Poer BERESFORD (1901-1934)
Wife:
Juliet Mary LINDSAY (1904-c. 1987)
Children:
John Hubert de la Poer BERESFORD (1933-2015)
Patrick Tristram de la Poer BERESFORD (1934-2020)
Marriage:
14 Oct 1930
London, St George Hanover Square¹ ²

Husband: John Charles de la Poer BERESFORD

Name:
John Charles de la Poer BERESFORD
Sex:
Male
Father:
Henry de la Poer BERESFORD (1875-1911)
Mother:
Beatrix Frances PETTY-FITZMAURICE (1877-1953)
Birth:
6 Jan 1901
Portlaw, Co. Waterford, Ireland¹ ²
Address: Curraghmore House
Title:
7th Marquess of Waterford
Death:
25 Sep 1934 (age 33)
Portlaw, Co. Waterford, Ireland¹
Cause: Injuries sustained in a shooting accident in the gun room

Address: Curraghmore House

Wife: Juliet Mary LINDSAY

Name:
Juliet Mary LINDSAY
Sex:
Female
Father:
-
Mother:
-
Birth:
27 Jan 1904¹
Death:
c. 1987 (age 82-83)¹

Child 1: John Hubert de la Poer BERESFORD

Name:
John Hubert de la Poer BERESFORD
Sex:
Male
Spouse:
Caroline Olein Geraldine WYNDHAM-QUIN
Birth:
14 Jul 1933²
Title:
8th Marquess of Waterford
Death:
11 Feb 2015 (age 81)
Portlaw, Co. Waterford, Ireland²

Child 2: Patrick Tristram de la Poer BERESFORD

Name:
Patrick Tristram de la Poer BERESFORD
Sex:
Male
Spouse:
Julia Jill WILLIAMSON ( -2013)
Birth:
16 Jun 1934
London, St George Hanover Square¹
Death:
18 Mar 2020 (age 85)
Berkshire, West¹

Sources

1.: thepeerage.com.

2.: wikipedia.org.