Hi Mavis
This one seems the most likely - marriage cert would hopefully confirm

1851: Hospital Street - Nantwich, Cheshire
HO107 / Piece: 2169 / Folio: 609 / Page: 36
Head: Henry WELCH 27, Carrier & Postmaster, b Nantwich Cheshire
Wife: Harriet WELCH 27, b Glentworth Lincs.
Dau: Harriet J B WELCH , 7, b Barton on Humber, Lincolshire
Son: Henry C WELCH 3, b Gainsboro Lincolnshire
Son: Oswald WELCH 1, b Nantwich Cheshire
Servant: Mary TAYLOR 34, unm, House Servant, b Ireland
Servant: Hannah PLATT 21, unm, Servant, b Faddily, Cheshire
1861: Barker Street - Nantwich, Cheshire
RG9 / Piece: 2619 / Folio: 65 / Page: 33
Head: Henry WELCH 36, widower, Postmaster,
Dau: Blanche WELCH 17, unm, Housekeeper. b Barton on ?Humber?, Lincolnshire
Son: Harry C WELCH 13, Scholar, b Gainsboro Lincolnshire
Son: Oswald WELCH 11, Scholar, b Nantwich, Cheshire
Son: Percy B WELCH 9, Scholar, b Nantwich, Cheshire
Dau: Emily WELCH 7, Scholar, b Nantwich, Cheshire
Dau: Sarah A WELCH 5, Scholar, b Nantwich, Cheshire
1871: Crofton Road - Orpington. Kent
RG10 / Piece: 878 / Folio: 67 / Page: 12A
Head: Edward G ALLEN 48, Bookseller, b Reynsham, Kent
Wife: Mary Ann ALLEN 49, b Glentworth Lincs.
Neice: Emily A WELCH 18, unm, b Nantwich Cheshire
Neice: Sarah A WELCH 16, unm, b Nantwich Cheshire
Servant: Alice STARTUP 17, Servant, b East Farleigh, Kent
Cheers
AMBLY