Hi Mark
First I know that area well, as I use to walk a lot at the lakes, trails at Wintersett, and Hemsworth water park also since I got my OAP free bus over a few years use the 28 bus Barnsley to Pontefract that skirts South Kirkby on its way to Hemsworth, then goes to Fitzwilliam, then takes a few miles on the B6428 to Offley lane roundabout, (Wragby crossroads) then on the A638 to Ackworth roundabout, then on the A628 to Ackworth village, then Featherstone and then onto Pontefract.
I also very occasionally drive to South Elmsall open market, passing through Foulby, pass by Nostell Priory estate, then through Fitzwilliam, Hemsworth, South Kirkby, Moorthorpe to South Elmsall.
At Foulby there's the odd farm, with a only a long row of very old houses at the side of the main road, made of similar stone to those on the Nostell estate buildings and seems to be part of the complex.
What is noticeable is there is no major waterway or canal in this area until you get to Thorne or Doncaster which make me think the London Southwark and Fenchurch was where any connection to John Hood of Selby was made - if any -?, So Maudland Hood/ Turner is the Hemsworth area connection -if any -?
Ackworth House - John Stagg, (off hand) you have a lot of info on Achworth (Quaker School), was it not thought George Hood born 1786 ish may have schooled there in Ackworth,
If you can find the link through Maudland to George you'll have a base to really work on

going by your dedication so far, with all your lines of research for finding George of Selby's early life pre 1812.
Good Luck
Dave