Yes, I think I'll probably order the Jane Jennings certificate - and as you have reminded me - it's an unusual name and misspellings must be common - I should know that from the number of times I've found mistakes in other surnames as well.
Even the William Jenner could be my William.
I think I'll take it slowly and order some of the 'close' death certificates over the next couple of months and see how I go

Once you put it all into context Valda, concerning temp typists unused to older handwriting, I can see why it can be so difficult to trace some family members.
I think I've just stumbled on Jemima Jennis in the '91 after searching for ages - on A.......y she is Jemima Gaines and tagged on with another family name, and on The G........t she is Jemima Guines. I'm almost 100% sure it's her because of her son's names.
So, another lesson learned - just because you can't find the actual correct surname, it doesn't mean they ain't there

Many thanks again Valda.