Ann Hampton WEEKS married William HARRIS or COOPER (he later settled on Harris) at Market Lavington 19th Aug 1797.
(some of their children were baptised as Cooper, others as Harris, or both - but that is not my problem)
Ann died Nov 1858 in Urchfont and her age at death suggests that she was born about 1776.
In the 1851 census she was recorded as Ann HARRIS, a widow age 75 born Lavington.
Who was Ann? I have not found any record of her in the baptism registers of Urchfont, Market Lavington or West Lavington as HAMPTON or WEEKS.