Please raise a glass to
Sir James Milne Wilson, the 8th Premier of Tasmania, who died on his 17th birthday, in the 1800s.
This article says he was quite a guy.
Why now? Today would have been his 50th birthday. (He was born exactly 204 years ago.) He was born on Leap Year day, and died on Leap Year Day; the only historical figure I've ever found to have managed that coincidence.
"17th birthday" means he was 68 years old.
(Note: edited. See comment.)