Hi Jane,
Do you want the bad news or the not to bad news!!

No marriage from 1822 - 1832 for any Elliotts.

While I was there I thought I would look at the baptismal records - before 1820 they are as I stated just a typewritten copy of the records - from 1820 onwards they are on fiche, with slightly more details - but not like a 1837 certificate!!
No 1094 Abode
July 21 1833 Ellen daughter of - Henry & Ann - Elliott - Rising Sun - Joiner
No 178
Oct 20th 1831 William son of - Henry & Ann - Elliott - Rising Sun - Joiner
I have found out that the Rising Sun were cottages on the Wrexham Road - just out side Whitchurch - near the canal - about 1/2 mile from Grindley Brook - where the Elliotts were in 1841 - a bit more useless information!!!

As Ann was from out of the county as per 1841 census - do you have her on any other census - giving her birthplace details?? Then you could try for her marriage in that town.
Cheers
Keith