Scouting Trivia - what's in a name?

What was Baden Powell's claim to fame? Clue: he died before the Scouts were founded.

Baden Powell was a clergyman and the father of Robert Baden-Powell, the maverik millitary leader and war hero who started the Scout and Guide movement. Robert Baden-Powell was born Robert Stephenson Smyth Powell, but his mother and his full siblings changed their surname after Baden's death to honour their dead father.

Incidentally in his youth he was not known as Robert, but as Stephe from his middle name Stephenson.