As well as the very unusual pronounciation of Torpenhow ("tre-penna"), the place name, 'Torpenhow Hill', said to be a ridge near Plymouth, has often been cited as being an example of quadruple pleonasm as it translates to 'Hillhillhill Hill', combining the elements of Saxon TOR, Celtic PEN, Scandinavian HAUGR (later transposed into HOW), and Middle English HILL
However, according to Darryl Francis
The debunking of Torpenhow Hill there is no such place of that name near Plymouth or anywhere else but the one here in Cumbria, and sadly there is no nearby hill called Torpenhow near here either!
A triple pleonasm though is smart enough.