3rd Marriage was to Mary Paul SMITH, Reg June 1861
1861 he is Lodging with Mary Smith, they must have married soon after Census which was taken 7th April.
DAY Marriages, St Gregory, Stoke St Gregory
JAMES Day to Mary BARRINGTON, 2 April 1829 (James Burrow, Elizabeth Day Witnesses)
ELIZABETH Day to James BURROWS, 29 Dec 1829
JANE Day to James HOUSE, 11 Dec 1831, Jas Burrows, Charlotte Dare Witnesses)
So I presume Jane/Elizabeth were Siblings of James.
Burial, same Church, 4 Nov 1821, HANNAH Day age 51