See also

Margaret OGILVY's parents: David Lyulph Gore Wolseley OGILVY (1893-1968) and Alexandra Marie Bridget COKE (c. 1891-c. 1984)
Margaret OGILVY's siblings: Victoria Jean Marjorie Mabell OGILVY (1918-2004), Griselda Davinia Roberta OGILVY (1924-1977) and Angus James Bruce OGILVY (1928-2004)

Family of Iain Mark TENNANT and Margaret Helen Isla OGILVY

Husband:
Iain Mark TENNANT (1919-2006)
Wife:
Margaret Helen Isla OGILVY (1920-2014)
Children:
Christopher John TENNANT (1950-2003)
Marriage:
Q3 1946
Westminster, London W^1,2

Husband: Iain Mark TENNANT

Name:
Iain Mark TENNANT
Sex:
Male
Father:
-
Mother:
-
Birth:
11 Mar 1919
Berwick-upon-Tweed, Nothumberland¹
Census:
19 Jun 1921 (age 2 yrs 3 mns)
Frinton-on-Sea, Essex³
Address: The Rookery, Holland Road
Death:
25 Sep 2006 (age 87)
Elgin, Morayshire¹

Wife: Margaret Helen Isla OGILVY

Name:
Margaret Helen Isla OGILVY
Sex:
Female
Father:
David Lyulph Gore Wolseley OGILVY (1893-1968)
Mother:
Alexandra Marie Bridget COKE (c. 1891-c. 1984)
Birth:
23 Jul 1920¹
Death:
22 Jan 2014 (age 93)¹

Child 1: Christopher John TENNANT

Name:
Christopher John TENNANT
Sex:
Male
Birth:
16 Jun 1950⁴
Death:
12 Jun 2003 (age 52)
London⁴

Sources

1.: wikipedia.org.

2.: England & Wales Marriages 1837 - 2005. Vol 5c P 817.

3.: Census 1921 E&W. RG15 PN09137 SN239 RD197 RS2 ED3.

4.: thepeerage.com.