I think the point is that the word isn't in common usage any more! When it was, it would have been pronounced "properly"; I guess that Martin Carthy (it was him, wasn't it?) wasn't familiar with the word before he learned the song. Maybe we can get him to tell us? I can't rememer how the late Dave Philips used to pronounce it; he always claimed that Paul Simon pinched the song from him at the Jug O'Punch before he got famous.

Steve