Australians know Waltzing Matilda, written by our most popular poet Banjo Paterson, as our most loved song and unofficial national anthem. What Australians don't know is that their song is embroiled in a web of secrecy, violence and a triangular love affair. Written at a pivotal time in Australia's history, Waltzing Matilda is as important to Australian culture as events like the Eureka Stockade and the story of Ned Kelly.