Hjackwells was my grandfather and I'd inherited some of his research, including the book "History of the Wells and Allied Families of the Eastern Shore of Maryland and Delaware" by George Harlan Wells 1958.
The records George had referenced for John included Greer's Early Virginia Immigrants and the Bruton Parish Records. John and his mother Katherine Fletcher died in the same year 1664 and both are buried in the Marshton Parish graveyard. (See Bruton Parish Records, page 159.)
Edit: I just verified with the online Bruton Parish Records. You are correct. Katherine Wells was not the mother for the wiki record. She is the mother for another John Wells (and James Wells).