Yon’s Well, Port Erin. John’s Well.
Per Roeder, the well is named after one John Maddrell.
South of the Darragh and east of Ballahowe. See link below as it is shown on the OS. It is not known if the well still exists.
If you have any information on this well please contact me and quote well record number (152) as this will help identify which well you are referring too.