Just found this little snippet about him. So droll that he could have been British himself. Now those days are gone.
Never one to do things by halves, in 1974, the Duke had 16 screws removed from his leg that were there to repair another injury before promptly snapping his collarbone whilst training for another Grand National attempt. However, despite being in a neck brace, the Duke managed to finish the race for the only time in his career and, at the same time, coined perhaps one of the famous witty retort in Grand National History.
When jockey Ron Barry was accidentally barged by the Duke, he yelled ‘What the hell are you doing?’. The eccentric aristocrat replied ‘My dear chap, I haven’t a clue….I’ve never got this far before!’