David Strath was one of the finest golfers of his age, competing against Young Tom Morris, and a three time runner-up in the Open Championships of the 1870s. He had a chance to win in 1876, but refused to participate in a playoff.
Strath disappeared two years later, and no one seeed to know his fate.
It turns out that he ended up in Australia, where he died shortly after arriving.
The story of the discovery of the grave of Strath is in Australia’s The Age.