Sometimes referred to as “Joseph Riddell”. “John” seems to be the more widely used name.

SCDDB internally has "John (or Joseph)" which may help with searches.

<<https://my.strathspey.org/dd/issue/3317/|Issue 3317>> explains that confusion appears to come from Gow attributing Riddle’s tunes as “Jo. Riddle” instead of “Jno. Riddle”.