Which Australian bushranger was the subject of a number of paintings by artist Sidney Nolan?

It's information like this that makes me love this App, had to use the majority hint to get it, bit glad I learned something about an Aussie outlaw.

Visited the Old Melbourne Gaol and saw Ned Kelly's death mask. They took the plaster mould after death hence the name. Also saw the gallows - and the tiny cells - a very cold eerie place.

He was not a hero.

I've not heard of Ned Kelly