Formed in 1989 by the amalgamation of St George and Port Hacking rugby clubs, with headquarters at Forshaw Park, Sylvania Waters, south of Sydney.

The new club played in red, sky blue, white and black jumpers and fielded 6 grade teams, 3 colts' sides, and an under-19XV.

St George showed promise of great success when it first came into the Sydney competition but was one of the clubs which suffered heavily from the decision to postpone all football for the duration of World War I.

They entered the team instead, in the 1957 Whiddon Cup in the competition with Lance Turbet president, Norm Rees secretary and Allan Carruthers treasurer of what was known as the North Cronulla SLSC Rugby Club.

In 2011, the Southern Districts Second Grade team won the grand final of the Colin Caird Shield, defeating Eastwood 24 points to 16.