Hi Gordon

could this be your Leo

in the 1911 census there is a Leo A Fitzgerald born Gloucester he is a married man stationed the Royal Marine Barracks
Durnford Street East Stonehouse Devon
County: Devonshire
He gives his age as 29 and a Private Royal Marines

MARIES MARRAGE
index
FITZGERALD, Leo A
Bride:WYATT, Ethel C M A
Date of marriage:27 May 1905
Parish:
Town:Plymouth
Series:ADM184 - Royal Marines,
Plymouth Division: Order,
Discharge and Letter Books,
Registers and Returns
Box:0050
Folio:49

below this marriage
It also states that these are 4 of their children up to 1911 but Horace was three months old before they wed

Children
Forenames Date of birth
Horace E R L A W 27 February 1905
Percival R H S J J 18 September 1906
William E M W 5 September 1908
Archibald P G V S 12 September 1911

Shelagh