Oh Lesley, Your blood is worth bottling!

I have spent the past two days searching and trying to work out how to access the parish records for Welwyn (nothing on Family Search, nor IGI, nor on Find My Past, nor Ancestry! including trying to get onto Rootsweb Hertfordshire-L Mailing List, but for some reason I don't understand they don't seem to have received my subscription.
If you are going back there sometime I would dearly love you to see if you could find two people.... possibly (but not definitely) brother and sister!
1. Margaret Gardner, born abt. 1793 (according to census entries)
2. Samuel Tims Gardner, probably born about 1782.
If I am not stretching the friendship too far

, and you DO find both of the above, I am expecting a marriage between a Gardner and a Tims, but this is only supposition, and this might be too difficult to find as the date is unknown!
Both of the above moved to London and married there.
Thanking you most sincerely in anticipation, Diana
P S I agree that your family were most unreasonable not letting you loose amongst the ancient tomes in the County Hall!

After all the wedding could have waited a while if you found something, couldn't it?