1872 T. Hardy I. iii. 116 He'd starve to death for music's sake now, as much as when he was a boy-chap of fifteen.
1939 F. Thompson 48 While the talking was going on, the few younger men, ‘boy-chaps’, as they were called until they were married, would not have taken a great part in it.
2004 (Nexis) 12 July 18 In the fifties, when I was a ‘boy chap’, I used to work in Exeter market.