should have the witnesses (may be useful in indicating bro's etc) marital status (bachelor/widower etc) by licence (99.9%) or banns. if one party was under age who gave permission.

It could be that burial date was wrongly transcribed (either by Brian if you used his index) or by IoMFHS transcriber (I've found many errors here - some parishes worse than others) - the film of the parish reg should have burials so you can check.