Nigel,
"By the Tre, Pol or Pen shalt thou know them Cornishmen"
DonD,
There is a road junction in Battersea (SW London) which, as far as I know, is STILL known as "The Prince's Head" to a good number of it's locals (and more of the ex-locals), after a pub that was demolished some time in the mid 1970s.
Walrus