The word goon has its own origin theories - some of which will be on the web,

2 points

1) - although highly popularised by The Goon Show - penned mainly by Spike Milligan, it was something he had heard of int eh British Army.

2) - the word goon was used in early Popeye - there may or may not be a link - opinions differ.

Whiel I can't remember off the top of my head the dating for Popeye, the Goon Show reference dates to teh late 1940's the Goon Show from early 1950's.

I've got the song in a book somewhere, but it's a recent publication.

Robin