Captain William Lonsdale, of the Fourth King's Own Regiment, was the first administrator and Police Magistrate of Port Phillip (1836). Born in England in , he joined the Army in 1819 and arrived in Sydney in 1831, becoming a Captain in the King's Own Regiment in 1834. He arrived in the Port Phillip District by HMS "Rattlesnake" on the 29th September, 1836. He married Martha, eldest daughter of Benjamin Smythe, of Van Diemen's Land, after whom Mount Martha was named. During the visit of the "Rattlesnake" Pt. Lonsdale was named (34 years after Pt. Nepean) and later Lonsdale Street and Pt. Lonsdale Road were named after Captain William Lonsdale.
From the description of Public notice. 1837. (Libraries Australia). WorldCat record id: 224312220