The man who led the settlement on the Yarra River that would become Australia's largest city for a time and that is now the second largest city in the country was named John Batman. He is responsible for a controversial treaty with the Wurundjeri in Port Phillip that is today known by historians as Batman's Treaty, and Melbourne for a long while was named "Batmania" after him.
Batmania.
I've been studying Australian history in my free time and this made me do a double-take. Now I'm off to find more people with Batman as their surname!
Any Melburnians have any more interesting things to add about Mr. Batman and his namesakes?