Maitland Brown was an explorer, politician and pastoralist in colonial Western Australia. He is known as the leader of the La Grange expedition and massacre, which searched for and recovered the bodies of three colonists killed by Aboriginal Australians, and killed between six and twenty Aboriginal Australians that remains controversial to this day.

In the Australian state of Western Australia, the Leader of the Opposition is the leader of the largest minority political party or coalition of parties in the Legislative Assembly of the Parliament of Western Australia. By convention, the leader is generally a member of the Legislative Assembly.