Hi Dave
I have found the same info as you... But nothing for a marriage for Susannah. Hope the following gives you a lead of some sort.
IGI & Family Search:
24 Aug 1815, Sarah Dike, s. & James Fox (w. possibly, one entry says yes another doesn't quote.), Claines, Worcester, mar.
30 Mar 1818, Sarah Dyke, s. & Thomas Potter, w. Worcester, mar.
8 Oct 1789, Thomas Potter, b. (Bap. 26 Dec 1789), Kidderminster. Parents John Potter & Mary.
8 Aug 1790, Jame Fox, bap. Powick, Worc. Parents James Fox & Joyce.
Regards
Geoff