 He won his first Munster Championship medal that season after Cork's 5-05 to 3-01 defeat of Limerick in the final.Thornhill claimed a second successive Munster Championship medal following Cork's 7-05 to 4-00 victory over Clare in the 1938 Munster final replay.He was again selected at full-back when Cork faced London in the All-Ireland final and claimed a winner's medal after the 4-04 to 4-01 victory.