See also

Douglas STEWART's other family: with Eileen Cecilia PONSONBY (1885-1931)
Mabel PONSONBY's parents: Louis George de Hale PONSONBY (1858-1887) and Elizabeth Susan LEYBORNE-POPHAM (c. 1858-1935)
Mabel PONSONBY's siblings: Eileen Cecilia PONSONBY (1885-1931) and Joan PONSONBY (1887-1981)

Family of Douglas STEWART and Mabel Elizabeth PONSONBY

Husband:
Douglas STEWART (c. 1876- )
Wife:
Mabel Elizabeth PONSONBY (1883-1913)
Marriage:
10 Oct 1907
Southwark, London SE^1,2
Address: St George

Husband: Douglas STEWART

Name:
Douglas STEWART
Sex:
Male
Father:
-
Mother:
-
Birth:
c. 1876³
Occupation:
1913 (age 36-37)
Captain, RFA⁴
Beneficiary:
2 Feb 1914 (age 37-38)
Beneficiary in probate of the will of Mabel Elizabeth PONSONBY
Beneficiary:
8 Jul 1931 (age 54-55)
Beneficiary in probate of the will of Eileen Cecilia PONSONBY

Wife: Mabel Elizabeth PONSONBY

Name:
Mabel Elizabeth PONSONBY
Sex:
Female
Father:
Louis George de Hale PONSONBY (1858-1887)
Mother:
Elizabeth Susan LEYBORNE-POPHAM (c. 1858-1935)
Birth:
27 Apr 1883
Terrick, Bucks^1,5,6
Death:
9 Nov 1913 (age 30)
Farnborough, Hants^1,4
Address: Pierremont
Probate:
2 Feb 1914
London⁴
Value of Estate £571 16s 11d

Sources

1.: thepeerage.com.

2.: BMD Index (GRO). Vol 1a P 885.

3.: Westminster Marriages.

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

5.: BMD Index (GRO). Vol 3a P 647.

6.: red1st.com.