Hi
He's not the Nottingham one
The Nottingham one was in the Army and received a Chelsea pension paid to him at Mansfield.
It looks like John is a bit unsure about his age.
Crew lists for the Battle of Trafalgar
John Stray HMS Mars age 26 born Devon so born 1779 .
So his age is not a problem.
Sometimes the names of his children help
John and Elizabeth Stray -
Agnes 1815 ,Mary 2.2.1817 ,
Philip 14.12. 1818 ,
Elizabeth 27.5.1821-9.9.1821 ,
James 28.7. 1822 ,
John 14.4.1825 -23.10.1825 ,
Robert 1827
,George 13.12.1829 and Hannah 8.12.1833.
John and Agnes-John 11.12.1776,
James 8.11.1778 Plymstock
,George and Phillip 15.8.1780 Plymstock ,
Elizabeth 21.4.1783 aged 16 weeks Plymstock,
Robert 18.9.1791
Marriage Stokenham John and Agnes Gross 19.2.1776 both otp bach spinster wit Robert Gross.
As you can see the names all match with John and Agnes and their children so it does look very likely they are the right parents.
ps this seems to be your man and may tell you more
https://discovery.nationalarchives.gov.uk/details/r/C9941508Ciderdrinker