Hi Attwood
This census entry may give you the info you require - otherwise it will mean purchasing a birth certificate for one of them unless somebody else has them in their tree already:
1901 census
14 Bridgeman Terrace, Wigan
William R DEAKIN head mar 38 jam? manufacturer b.Wigan
Mary J wife 42 b.Blackburn
Bessie dau 9 b.Wigan
Robert H son 6 b.Wigan
George son 4 b.Wigan
Stanley son 2 b.Wigan
Peggie HARTLEY mother in law widow 76 b.Darwen
Annie DOWD servant unm 21 general servant b.Wigan
RG13/3557 folio 137 page 29
Casalguidi