I quickly found out a few things. Firstly there was also significant amount of Pele Towers in Cumberland and Westmorland.
The Scottish borders also had a series of Pele Towers probably for the same reasons as the English Counterparts.
A number of Churches and vicarages had Pele towers built into their construction as a place of sanctuary for the villagers.
There was also Pele towers in Durham and Yorkshire, the most Southern one was in Northampton this was built by a gentleman who'd previously lived in Cumberland.
I'll see what else I can come up with over tge next week or two.