Hi Charlotte
I have loads of information on the Warminster Lidbury's, although I cannot connect them to my own Frome tree yet. I believe you are correct when you say George was the brother of Alfred. However, I am pretty certain that they were the children of Edward C. jun. who was the son of the Edward Castleman baptised in 1743. Edward snr. married twice, the second time to Susanna Gibbons who must have been considerably younger than him because they were having children at the same time as Edward C. junior and his wife Mary Gaisford. It makes the tracing of this family very confusing, but I would be delighted to help if required.
Just recently I have purchased a book called "The History Of Warminster" and there is a list of Volunteers from the Warminster Loyal Association, formed duringthe French Revolution , and was a type of Home Guard, to protect the town and an area of 7 miles around. It was inaugurated on 3 July 1798. Edward Castleman Lidbury was listed as a Private, (and it was probably Edward C. jun who would have been aged 22) as one of the Sergeants was John Gaisford. Was he related to Mary Gaisford? If you have any questions on the family, I would be delighted to help.
Dale