1891 census:
RG12/2485/91/16
Back End, Moreton in Marsh
Henry GILLETT - Head - 49 - Gen Labourer
Ann - Wife - 20
Louisa - Dau - 18
William - Son - 13 - Plough Boy
Annie - Dau - 11
Alice - Dau - 8
(All born Moreton in Marsh.)
This is a likely marriage for William's parents:
Marriages Mar 1864
BROWN Ann
GILLETT Henry
Shipston 6d 674
You could confirm it by getting William's birth cert:
Births Dec 1877
GILLETT William
Shipston 6d 692
Rambler