Looking for Unity WELLS/STANLEY, I found these families...
1871 census
RG10/2165; Folio: 65; Page: 30
Caravans, Road Side,
Richard STANLEY - Head - 40 - Hawker Traveller - Gloucs
Ellen STANLEY - Wife - 35 - Oxford
Unity STANLEY - Dau - 10 - New York
Megglie STANLEY - Dau - 14 - Taunton
William STANLEY - Son - 9 - Taunton
Lee Annie STANLEY - Dau - 5 - Taunton
Betsey STANLEY - Dau - 3 - Knightsbridge
James STANLEY - Head - 59 - Hawker - Wellington, Somerset
Mary STANLEY - Wife - 40 - Illminster, Devon
Richard STANLEY - Son - (?)15 mo - Devon
Becky STANLEY - Dau - (?)10- Taunton
1881 census
RG11/2179; Folio: 66; Page: 7
Caravans, Halwell
Richard STANLEY - Head - 53 - Travelling Gypsey (scored through) - Gloucs
Ellen STANLEY - Wife - Northants
Thomas STANLEY - Son - M - 24 - Taunton, Somerset
John BUCKLAND - Son-in-law - M - 22 - America
Richard STANLEY - Nephew - 11 - Devon
Unity STANLEY - Dau - M - 21 - America
Phebe BUCKLAND -Dau - Unm - 20 - Somerset
Not the right Unity, but surely related?
Rambler
UPDATED - Found the "right" Unity, but no time to post before school run! I'll add it later if no one else posts it first.