Spelling of the names of this family seems to cause problems for compilers of records!!
Looks as though Marian's maiden name may have been WHITLEY
1851 census:
at Handborough, Oxfordshire (all b Handborough)
William Whitley 60, ag lab and his children:
Henry Whitley 19
Robert Whitley 16
Martin Whitley 14
Eleazer? Whitley 12
William Whitley 10
Mary A Whitley 7
Thomas Tallott 24, son-in-law
Mirian (sic) Tallott 22, dau, glover
Walter Tallott 1 2 Mo, grandson
Looks like a brother of Marian listed with his wife in the next household.
FreeBMD has this marriage:
Jul/Aug/Sep qr, registered Witney, Oxfordshire
Thomas TALLOT, Miriam WHITLEY
Judith