Who were the 'Attercliffe' family - Blue Mountains, Australia

I stumbled across these photos on flickr a while back. The library in Blue Mountains (about an hour west of Sydney) has been uploading scans of old negatives from their archives and these family portraits caught my eye. They're thought to be from 1907-09 and nothing is known about the family, other than they named their house 'Attercliffe'. It seems pretty certain they're from round here so I thought it was worth putting them up to see if anyone might recognise their grandparents or cousins-once-removed. It would be nice if we could put a family name to the faces.