References to Aboriginal people in the Carlingford historical record in the 18th, 19th and into the 20th century remain limited to a handful of third party observations, reinterpreted in modern day. There are many historical ambiguities and uncertainties around clan, language and cultural groups of the area.

The people of what is now known as Carlingford at the time of the arrival of the First Fleet at Port Jackson in 1788 were the Wallumedegal or Wallumattagai people.[4] The people were observed to live in the area bounded approximately by the Parramatta River in the south, the Lane Cove River in the east, the Parramatta area in the west and ranged north for an uncertain distance.[5] The Wallumedegal appear to have been of the Eora language group.[6] The clan name seems to have been derived from wallumai, the snapper fish, combined with matta, a word used in association with ‘place’ or sometimes ‘waterplace’.  (Wikipedia)