The Union was founded at Te Aroha on 8 May 1909 through amalgamating several clubs and organisations in the southern part of the Auckland Province that were previously affiliated to the Auckland Rugby Union as sub-unions.
The union also included Rotorua, Ōpōtiki, Whakatāne, Te Puke, Tauranga, and Taupō until April 1911 when they cumulatively split to form the Bay of Plenty Rugby Union.
The remaining South Auckland area that did not join the new Waikato Union formed their own unions; King Country and Thames Valley respectively.
They were beaten 21-5 by Auckland in their sole shield challenge in August 1911.
You can help Wikipedia by expanding it.This rugby union article is a stub.