Scottish, Strathspey (whole time). A Minor. Standard tuning (fiddle). AAB. A 'rough tyke' is someone who is ill-mannered, boorish, loutish, etc., not always said pejoratively and sometimes with affection.
Additional notes
Source for notated version: -
Printed sources : - James Davies (Davies Caledonian Repository), Aberdeen, 1829-30; p. 14.