> Somehow I don't think this really explains why my grandfather
> pronounced the world "elm" as "elum."
We (Irish people) also pronounce "film" as "filum", don't know
the reason, but I suppose like the "th" sound (Many people do not
pronounce "th"s because the sound does not exist in Irish, they
use "t" or "d" sounds instead) it has it's origin in the Irish