I really suspect the factoid is indelible in public data and imagination now. It's on a map, innit! Like https://en.wikipedia.org/wiki/Agloe,_New_York or https://en.wikipedia.org/wiki/Argleton
Nice story though, and at least @selzero 's retelling doesn't suggest weird replacement theories or anything! People, just migrating, intermarrying, trying to speak each other's language and avoid fights is probably how the one or two (or three, max!) vaguely related place terms in the village name came about.
But they're not even redundant terms. They mean different things, and each bit adds to the meaning of the elements around it. Even the lately- and hypothetically added "hill" adds a layer of meaning. So alas the redundant naming fun doesn't work out.
Sorry for the cold water 🧊 
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#TorpenhowHill #HillHillHillHill #TrapStreet