To complete the set, F is Feniton.
I did wonder if the last four names ending in "ton" was significant in some way. But more likely it's just nature's way of reminding us that an emergent pattern is not necessarily a real property. It may be just the data having a bit of noisy fun - data will be data, after all.
I hadn't noticed / set up "ton" intentionally. The first letter was intentional, as was north being up, left, down and right in turn. Yes, "J" was a very limited choice unless I had gone for "Junction de Clapham" of "Junction de Dovey"