See also

William LEVESON-GOWER's parents: Granville George LEVESON-GOWER (1815-1891) and Castila Rosalind CAMPBELL ( -1938)
William LEVESON-GOWER's siblings: Victoria Alberta LEVESON-GOWER (1867-1953), Sophia Castella Mary LEVESON-GOWER (1870-1934), Granville LEVESON-GOWER (1872-1939) and Susan Katherine LEVESON-GOWER (1876-1878)

Family of William Spencer LEVESON-GOWER and Rose BOWES-LYON

Husband:
William Spencer LEVESON-GOWER (1880-1953)
Wife:
Rose BOWES-LYON (1890-1967)
Children:
Mary Cecillia LEVESON-GOWER (1917-2014)
Granville James LEVESON-GOWER (1918-1996)
Marriage:
24 May 1916¹

Husband: William Spencer LEVESON-GOWER

Name:
William Spencer LEVESON-GOWER
Sex:
Male
Father:
Granville George LEVESON-GOWER (1815-1891)
Mother:
Castila Rosalind CAMPBELL ( -1938)
Birth:
11 Jul 1880¹
Title:
4th Earl Granville
Death:
25 Jun 1953 (age 72)¹

Wife: Rose BOWES-LYON

Name:
Rose BOWES-LYON
Sex:
Female
Father:
-
Mother:
-
Birth:
6 May 1890¹
Death:
17 Nov 1967 (age 77)¹

Child 1: Mary Cecillia LEVESON-GOWER

Name:
Mary Cecillia LEVESON-GOWER
Sex:
Female
Spouse:
Samuel Wittewronge CLAYTON (1918-2004)
Birth:
12 Dec 1917¹
Death:
13 Feb 2014 (age 96)¹

Child 2: Granville James LEVESON-GOWER

Name:
Granville James LEVESON-GOWER
Sex:
Male
Birth:
6 Dec 1918¹
Title:
5th Earl Granville
Death:
31 Oct 1996 (age 77)¹

Sources

1.: wikipedia.org.