Not sure if any of this will help with the answer to David Elwell with the Harrisons - thought maybe Epherman had married a second time as his wife is named Nancy 1851/61 children surname HARRISON & wife named Mary 1871 children surname ELWELL
1851 HO107; Piece: 2031; Folio: 288; Page: 16
Epheram Harrison wife Nancy 32
Children George 6, Ellin 3 & Joseph HARRISON 4mths
John TURNER lodger
1861 RG 9; Piece: 2050; Folio: 87; Page: 5
Ephram HARRISON wife Nancy 39
children Helen 13 & Samuel HARRISON 2
George TURNER 16 son in law
Marriage 1847
Ephraim HARRISON name on same page
Nancy TURNER 1871 RG10; Piece: 3006; Folio: 67; Page: 15
Ephram
HARRISON wife Mary 51
children Ellen 23 Samuel 11, Joseph 4 & David 1 surnames
ELWELLJohn ELWELL married
Hannah Eunice WILKES21 Apr 1862 Sedgley Stafford
Sarah Anne Elwell christened 22 Mar 1870 Sedgley
Parents John Elwell & Hannah Eunice
1871 RG10; Piece: 3004; Folio: 75; Page: 13
Ann WILKES 68
John ELWELL son in law 37
Hannah U Elwel 27
Elizabeth Ewell 6