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Jane Nartare Beaumont (born 10 September 1956), Arnna Kathleen Beaumont (born 11 November 1958) and Grant Ellis Beaumont (born 12 July 1961), collectively referred to as the Beaumont children, were three Australian siblings who disappeared from Glenelg Beach near Adelaide, South Australia, on 26 January 1966 (Australia Day) in an unsolved disappearance case and a suspected abduction and murder.

Police investigations revealed that, on the day of their disappearance, several witnesses had seen the three children on and near Glenelg Beach in the company of a tall man with fairish to light-brown hair and a thin face with a sun-tanned complexion and medium build, in his mid-thirties. Confirmed sightings of the children occurred at the Colley Reserve and at Wenzel's cake shop on Moseley Street, Glenelg. The case received worldwide attention and is credited with causing a change in Australian lifestyles, since parents began to believe that their children could no longer be presumed to be safe when unsupervised in public.

Jane, Arnna and Grant Beaumont lived with their parents, Grant "Jim" Beaumont, a former serviceman and taxi driver, and Nancy Beaumont (née Ellis); the couple had married in December 1955. On the morning of 26 January (Australia Day), the children asked their mother if they could visit Glenelg Beach again.

Police quickly organised a search of Glenelg Beach and adjacent areas, based on the assumption that the Beaumont children were nearby and had simply lost track of time. The Patawalonga Boat Haven was drained on 29 January after a woman told police that she had spoken with three children, who were similar in description to the Beaumont children, near the haven at 19:00 on the day of the disappearance.

Police investigating the case found several witnesses who had seen the Beaumont children in Colley Reserve, near Glenelg Beach, in the company of a tall man with fair to light-brown hair and a thin face, in his mid-thirties. Police viewed this as further evidence that the Beaumont children had been with another person, for two reasons: the shopkeeper knew the children well from previous visits and reported that they had never purchased a meat pie before, and the children's mother had given them only six shillings and six pence, enough for their bus fare and lunch, and not £1.

About two years after the disappearance, the Beaumont parents received two letters: one was supposedly written by Jane, and another by a man who said he was keeping the children.

About this time, police came to suspect his involvement in the Beaumont disappearance as well, owing to his resemblance to descriptions and identikits of the unidentified suspect from 1966. The Beaumont children were also much younger than Richard Kelvin or the other young men von Einem is believed to have targeted, who were in their teens or twenties. Investigations into both the Beaumont disappearance and the Adelaide Oval abductions remain officially open and, in 1989, von Einem was identified as a suspect in a confidential police report.

A search for a connection to the Beaumont children was unsuccessful as no employment records existed that could shed light on Brown's movements at the time of the disappearance. Brown was aged 53 at the time of the Beaumont disappearance, which does not match the description of the suspect seen with the children, who was reported as being in his thirties.

In June 2017, Adelaide police detectives were given a copy of a child's diary, written in 1966, which allegedly placed Munro in the vicinity of Glenelg Beach at the time of the Beaumont disappearance.

The Satin Man: Uncovering the Mystery of the Missing Beaumont Children. The missing Beaumont children: 50 years of mystery and misery. "Who's Watching the Children?: The Beaumont Case Revisited".

Quick Facts

• Jane, Arnna and Grant Beaumont lived with their parents, Grant "Jim" Beaumont, a former serviceman and taxi driver, and Nancy Beaumont (née Ellis); the couple had married in December 1955.
• The Patawalonga Boat Haven was drained on 29 January after a woman told police that she had spoken with three children, who were similar in description to the Beaumont children, near the haven at 19:00 on the day of the disappearance.
• About two years after the disappearance, the Beaumont parents received two letters: one was supposedly written by Jane, and another by a man who said he was keeping the children.
• Brown was aged 53 at the time of the Beaumont disappearance, which does not match the description of the suspect seen with the children, who was reported as being in his thirties.
• The case received worldwide attention and is credited with causing a change in Australian lifestyles, since parents began to believe that their children could no longer be presumed to be safe when unsupervised in public.

Source material: Wikipedia - "Disappearance of the Beaumont children". Adapted and summarized for DiscoverScroll. Original contributors are credited through the linked Wikipedia article. Read original on Wikipedia. CC BY-SA 4.0. Changes were made from the original.