John Montagu, 4th Earl of Sandwich, was a known member of London's Hellfire Club. It was he who ordered his manservant to "fetch me some slices of roast beef, wrapped in bread - can't have the old fingers getting greasy, eh what!" to sustain him at the gambling table - hence the eponymous 'sandwich'.
As Lord of the Admitalty he was also the patron of Captain James Cook, so visiting Australia might be a Satanic act as well ...