Hi again, sorry for the delay

Most of that is borne out by the transcriptions :-
Baptisms at Blyth to John and Hannah Hancock
27/01/1793 John, abode Blyth
14/09/1795 William, abode Hodsock
07/12/1799 Thomas, abode Hodsock
Marriage South Leverton John Hancock and Hannah Adsett 10/04/1792
There is a John bap. 04/08/1770 at Blyth to John and Amey.
Also a John 30/01/1776 at Worksop to Henry and Elizabeth. Plus several more in the time frame at Mansfield. You would need to find a burial for your John to narrow it down further? I'm afraid the Notts transcriptions of burials stop around 1812.
Sorry I don't see a baptism for Hannah
Heather