Nettleton & Caistor are less than 1 mile apart , and Winterton is about 20 miles away. Jane Dent aged 71 on the 1871 census gives her birthplace as Winterton Lincs. If you go to the LDS IGI , there is a Jane Hill christened Nov 22 , 1799 in Winterton, Child of David Hill & Ann. David Hill and Ann Wade married October 5, 1798 in Winterton. They had at least the following ; Jane1799 Elizabeth 1802 David1804 Ann1806 John1809
Before David married Ann , he married Alice Driffill June 6 , 1796 and had son John , ch July 15 1797, both Alice and John died soon after , Alice Buried October 9 1797 aged 34 and John buried October 23 , all in Winterton.
So it looks like there is no doubt that it was Jane Hill who married William Dent.
What has surprised me is that there are no births of their children on the IGI , and where are they all on the 1841 census ??