Hello David, Went to Beds Archives - open till 7pm on Mondays.
Marriage on 19 Oct 1789 states William Medlock is a widower.
Burial on 24 Dec 1812 has William as son of William & Mary Medlock
Marriage on 2 Nov 1810 is there, & it says Jn Huckle, of the Bedfordshire militia in Hastings Barracks
Interestingly there are banns on 28 Oct 1810 of a Jn Huckell to Sarah Dean of Gamblingay, Cambs.
Burial on Mar 19 1802 of Eliz, daughter of Wm Mercy Medlock, labourer
Burial on Apr 22 1788 of Mary Medlock.
Have a good rest, John