When I got back this far, I found Bertha's father was Edmund, not Leonard, but I'm sure it's her family...

1871 census:
RG10/2593/31/13 - Hawshill, CoaleyEdmund Hill Head 27 Baker & Confectioner Coaley
Annie Hill Wife 27 Coaley
Clifton Hill Son 5 Scholar Coaley
Marshall Hill Son 4 Scholar Coaley
Milicent Hill Dau 3 Coaley
Jessica Hill Dau 1 Coaley
Ann Pearce Servant 18 Kingscote
OK! Leonard was the grandfather...!
1861 census
RG9/1752/37/3 - [...], CoaleyLeonard Hill Head Wid 40 Confectioner Cam, Gloucs
Edmund Hill Son 17 Confectioner Coaley
Hannah Hill Dau 12 Domestic Servant Cambridge, Gloucs
Mary Jane Hill Dau 9 Scholar Cambridge, Gloucs
Charles Hill Son 7 Scholar Cambridge, Gloucs
Daniel Hill Son 5 Scholar Coaley
Kate Hill Dau 4 Scholar Coaley
Emma Hill Dau 2 Coaley
I haven't found them yet in 1851.
Rambler