 Southerners were formed by the amalgamation of Pemberton (red and blue) and Northcliffe (white and red), the two southern most towns in the district, thus the naming Southerners.Nannup only competed for one year and Royals competed for five years, before both teams left to join the Blackwood Football Association.The league remained as a six-team league for the next 44 years, when Kojonup joined the league in 2008 after transferring from the Great Southern Football League.