Would George Edwin be the son of Walter and Emily nee Jolly, who was born around 1922 in SA and died in 1984 in Victoria?
If so, I have quite a family tree for him and his family in Victoria, Cornwall, NSW and SA.
Have a look at my entries under Murley of Cornwall and Maryborough to see what I am doing, and Keith Murley will also give you some idea of my project as we have been swapping information for a while now.
I will be pleased to hear from you and give you some help.
Don't worry about Murleys in 11th Century Ireland just yet - you have a few centuries of occupation in Cornwall to get through first!