There's nothing else appearing on the Notts FHS records about their marriage that you haven't already got.
I presume you knew that they had a son named George, baptised 28th July 1798, St Marys Nottingham. He's the only child recorded for them.
There's only 1 possible baptism that I've come across for a George Whitworth, which I have to say doesn't look very likely - parents Edward and Sarah, 30th October 1773 at Newark.
There were a couple of Priscilla's baptised at St Marys Nottingham around 1771:-
Needham, parents James & Elizabeth, 6th March 1773
Moore, parents Robert & Priscilla, 25th November 1774.
BG