I keep coming back to this 41 entry, it does look like they are living in the same household, could George be Joseph Attwood's before they married?.. I still don't have any clues as to who this Sarah is..
Living a couple of doors away:
Sarah Baskerfield 25
George Baskerfield (looks like 1)
also a Joseph Attwood 25 but not sure if living with above?
Have we established this can't be the same Henry, he's alive in 71, looks like Sarah nee Shilvock's father William is living with them
BASTERFIELD Henry 1844 - Halesowen West Midlands Dudley Register Office HAL/003/120
1871
74
Islington, Halesowen
Henry Basterfield 51
Sarah Basterfield 49
Mary A Basterfield 15
William Basterfield 13 - Lab at Gun barrel works
Sarah J Basterfield 10
Alice Basterfield 7
William Shilvock 73 - Lodger - widow
all b Halesowen, others Nailmakers
Extracted
SARAH SHILVOCK
Christening: 25 DEC 1821 Halesowen
Father: WILLIAM SHILVOCK
Mother: MARY