"Billy Tea" - now as I've heard it, the brand "Billy Tea" may actually have preceded the use of the term for the Billy Can you boil things in, and given it the name. The suggestion is that Banjo Patterson changed the words of Waltzing Matilda from his first version to bring in the Billy (for a consideration), and that this caught on as a term for the Billy Can, which would,previously have just been referred to as a can.

Anyoe know the truth of this?