Sir John Wilton
... that a serious demeanour and disdain for small talk earned the Australian General Sir John Wilton the nickname "Happy Jack"?
... that a serious demeanour and disdain for small talk earned the Australian <a href="./General_officer" id="mwBJw" rel="mw:WikiLink" title="General officer">General</a> <b id="mwBJ0"><a href="./John_Wilton_(general)" id="mwBJ4" rel="mw:WikiLink" title="John Wilton (general)">Sir John Wilton</a></b> the nickname "Happy Jack"?