I don't have anything on the specific individuals you mentioned. But as far as "any information on the MacIntyre families of Barra", you might find my website interesting.
http://www.macintyre.caBasically it's regarding on the descendants of 'John MacIntyre (1772-????) of Barra'. Click on either the 'MacIntyre's in C.B.' link or 'John (1772- )', there is a bit of information on his immigration to Canada.