Complex sentence: Captain Patrick Logan (1791--October 1830) was the commandant of the Moreton Bay penal colony from 1826 until his death in 1830 at the hands of Aboriginal Australians who objected to him entering their lands.
Split into simpler sentences: Captain Patrick Logan (1791--October 1830) was the commandant of the Moreton Bay penal colony from 1826 until his death in 1830. He is thought to have been killed by Aboriginal Australians who objected to him entering their lands.