Interesting that there are a number of trees and only one has Sarah Newman as Isaac's spouse, all others have her as Cullingworth or similar, they also have b. 1805 Yorkshire.. a census has her b. 1803 Herts. No obvious marriage yet for either name.
I have no idea when Sarah died or if she remarried.
Death/Burial for an Isaac Wilson in Hatfield 1838 aged 37.
HO107 Piece/Book 436/10 Folio 17 Page 29
Civil Parish: Bishops Hatfield
Registration District: Hatfield & Welwyn
Address: Pond Hill
Charlotte Hickson 35 Farrier Y
Folio 18 Page 30
John Massey 23 Farrier J. Y
Ellen Wilson 16 Y