Official History book lists Andrew Forsyth, signed season 1940-41, played 26, scored 4 goals.
There's also Adam Forsyth, signed season 1946-47, played 111, scored 1 goal.
Edited to add: No sign of a Forsyth being capped in the forties according to this list:
http://en.wikipedia.org/wiki/List_of_Scotland_international_footballers_(alphabetical)