High Quality Content by WIKIPEDIA articles! May Brothers and Company was an engineering and manufacturing firm founded by Frederick and Alfred May in 1885. In 1986, during South Australia’s 150th Jubilee celebrations, Frederick May was named one of the 150 individuals to have made an outstanding contribution to the state’s development. A personalised plaque in his honour can be found in the footpath of North Terrace, Adelaide, as part of the Jubilee 150 Walkway.