[Facts] not a clue....(m)
by Merriment MacMordor (guest)
4/27/2003, 6:58 AM
Sorry :).
But seriously, it's probably from a surname (if it's English in origin), and the best bet is Clough (cluff) also found in the form Clue/Clew, and meaning 'dweller in a steep-sided valley or ravine'.