I am of the aforementioned Webb line, and am trying to clean up my Ancestry tree. There is, indeed, a great deal of unreliable and conflicting information on there, to be sure. I did come across a partial reference for a Probate (UK Extracted Probate Records) for a Sir Thomas Alexander Webb, Jr. buried at Charlton, Tetbury, Gloucestershire, England, so it would appear that such a man did exist and in that general area. It does not, however mean that he was a part of the referenced line.