Hello Colin,
I don't know if you already had the information, but here is Gilbert & Rebecca on the 1881 Census.
Regards, Liz.

Dwelling: 30 Halsall Road

Census Place: Birkdale, Lancashire, England

Source: FHL Film 1341896 PRO Ref RG11 Piece 3745 Folio 147 Page 25

Marr Age Sex Birthplace
Gilbert RIMMER M 36 M Scarisbrick, Lancashire, England

Rel: Head

Occ: Farm Labourer
Rebekah RIMMER M 31 F Birkdale, Lancashire, England

Rel: Wife

Occ: Farm Labourer Wife
James W. RIMMER 9 M Birkdale, Lancashire, England

Rel: Son

Occ: Scholar
George RIMMER 1 M Birkdale, Lancashire, England

Rel: Son
Ernest RIMMER 7 m M Birkdale, Lancashire, England

Rel: Son
Alice RIMMER 11 F Birkdale, Lancashire, England

Rel: Daur

Occ: Scholar