High Quality Content by WIKIPEDIA articles! Ian Lovett O`Brien (born 3 March 1947 in Wellington, New South Wales) is a former Australian breaststroke swimmer of the 1960s, who won the 200 metre breaststroke at the 1964 Summer Olympics in Tokyo in world record time. He won five Commonwealth Games gold medals and claimed a total of nine individual and six relay titles at the Australian Championships, before retiring at the age of 21 due to financial pressures.