A 42-year-old man has been charged with murdering his British art curator father and cook book author sister in Australia.

Antony Waterlow has been accused of murder and GBH

Nick Waterlow, 68, and 37-year-old Chloe Waterlow were found stabbed to death at her home in Sydney on November 9.

The curator’s son Antony was armed with a small knife when he was arrested in north west Sydney, Australia.

New South Wales Police said the suspect will appear at Parramatta Bail Court on Saturday.

The victims’ bodies were discovered alongside an injured toddler at a house in the affluent Sydney suburb of Randwick.

Both the curator and the author had suffered multiple stab wounds.

The girl, believed to be Ms Waterlow’s two-year-old daughter, was treated for a throat injury.

Police said the suspect was also accused of recklessly inflicting grievous bodily harm.

Nick Waterlow, born in Hitchin, Hertfordshire, moved to Sydney in 1965 and married Rosemary O’Brien, who died from cancer in 1998.

He worked as director of the Ivan Dougherty Gallery at the University of New South Wales College of Fine Arts and was awarded the Medal of the Order of Australia for his contribution to the arts.

Mr Waterlow regularly returned to England to visit his elderly mother and is survived by his sons Antony and Luke, and three grandchildren.

His daughter’s husband flew back to Australia after he was told about the deaths.

Local reports named him as digital technology consultant Ben Heuston, who had been on a business trip to London.