Welcome from me too.
A couple (at least) of cabinet makers in Newbury named FINCH. There is a George FINCH, cabinet maker of Newbury who was bankrupt in 1840. And also a John FINCH, cabinet maker of Newbury married Elizabeth HOLDWAY of Bishopstone in Feb 1841.
There is a death notice for "Mrs Finch, wife of Mr C Finch, cabinet maker, Newbury" died on 24 June 1833.
Friday, June 29, 1833
Publication: Berkshire Chronicle
The only mention I can see of a "Charles FINCH" is in 1834 when John HAZELL of Crookham was convicted of stealing apples from the garden of Charles FINCH.
You possibly already have Sarah's death notice:
Saturday, Sept. 4, 1858
Publication: Reading Mercury
Saturday, Sept. 27, 1834
Publication: Berkshire Chronicle