See also

William LE POER TRENCH's other family: with Isabel Maude Penrice "Belle" BILTON (c. 1867-1906)
William LE POER TRENCH's parents: Richard Somerset LE POER TRENCH (1834-1891) and Adeliza Georgiana HERVEY (1843-1911)
William LE POER TRENCH's siblings: Katherine Anne LE POER TRENCH (1871-1953) and Richard John LE POER TRENCH (1877-1960)

Family of William Frederick LE POER TRENCH and Mary Gwatkin ELLIS

Husband:
William Frederick LE POER TRENCH (1868-1929)
Wife:
Mary Gwatkin ELLIS ( -c. 1974)
Children:
William Francis Brinsley LE POER TRENCH (1911-1995)
Power Edward Ford LE POER TRENCH (1917-1995)
Sibell Alma Kathleen LE POER TRENCH (1918-1974)
Marriage:
7 Oct 1908
Westminster, London W¹
Address: St Margaret's

Husband: William Frederick LE POER TRENCH

Name:
William Frederick LE POER TRENCH
Sex:
Male
Father:
Richard Somerset LE POER TRENCH (1834-1891)
Mother:
Adeliza Georgiana HERVEY (1843-1911)
Birth:
29 Dec 1868
Fort Eyre, Co. Galway, Ireland¹
Title:
5th Earl of Clancarty
Residence:
frm Jul 1920 to Oct 1920 (age 51)
Wandsworth, London SW²
Address: Wandsworth Prison

Guilty of offence of fraud (obtaining credit whilst being an undischarged bankrupt). Sentenced to 3 months without hard labour.
Death:
16 Feb 1929 (age 60)
Taplow, Bucks¹
Address: Dunlo Lodge

Wife: Mary Gwatkin ELLIS

Name:
Mary Gwatkin ELLIS
Sex:
Female
Father:
-
Mother:
-
Death:
c. 1974¹

Child 1: William Francis Brinsley LE POER TRENCH

Son: William Francis Brinsley LE POER TRENCH

Name:
William Francis Brinsley LE POER TRENCH
Sex:
Male
Spouse (1):
Diana Joan YOUNGER (1919-1999)
Spouse (2):
Wilma Dorothy Millen VERMILYEA (1915-1995)
Spouse (3):
Mildred Allewyn BENSUSAN (c. 1896-1975)
Spouse (4):
Mary Agnes RADONICICH (1904-2003)
Birth:
18 Sep 1911
London, St George Hanover Square¹ ³
Title:
8th Earl of Clancarty
Death:
18 May 1995 (age 83)
Bexhill-on-Sea, E, Sussex¹

Child 2: Power Edward Ford LE POER TRENCH

Name:
Power Edward Ford LE POER TRENCH
Sex:
Male
Spouse:
Jocelyn Louise COURTENEY ( -c. 1962)
Birth:
22 Jan 1917
Chelsea, London SW¹ ⁴
Death:
29 Jan 1995 (age 78)
Kensington, London SW¹ ⁵

Child 3: Sibell Alma Kathleen LE POER TRENCH

Daughter: Sibell Alma Kathleen LE POER TRENCH

Name:
Sibell Alma Kathleen LE POER TRENCH
Sex:
Female
Spouse:
Stewart Croft JOLLY (1909-1975)
Birth:
21 May 1918
Chelsea, London SW¹ ⁶
Death:
15 Sep 1974 (age 56)
Limpsfield, Surrey⁷
Address: Jessamine Cottage
Probate:
22 Oct 1974
Brighton, E Sussex⁷
Value of Estate £21,318

Sources

1.: thepeerage.com.

2.: England & Wales Crime, Prisons & Punishment 1770 - 1935.

3.: England & Wales Births 1837 - 2006. Vol 1a P?

4.: Ibid. Vol 1a P 561.

5.: England & Wales Deaths 1837 - 2007. Vol 13 P 1882.

6.: England & Wales Births 1837 - 2006. Vol 1a P 470.

7.: England & Wales Probate Death Index 1858 - 2019.