Just for background, Isabella in 1861?
Living at No 12, 10 Court, Nash Grove, Liverpool
Sub-registration district: St Martin
Household schedule number: 231 Piece: 2650 Folio: 28 Page Number: 54
Charles Thursby 38 Painter Ireland
Isabella Thursby 36 Manchester
Death for a Isabella Thursby. age 38, on 16th December 1863, buried in St Oswalds on the 17th.