On a deserted island

With the popularity of Cast Away, it got me wondering. Has there ever been a DOCUMENTED case of someone being stranded on a deserted island then returning to “civilization”?

Sure. Alexander Selkirk was supposedly the inspiration for Robinson Crusoe.

http://wy.essortment.com/alexanderselkir_rehj.htm

Aw…that doesn’t really count…he did it voluntarily.