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Daisy de Melker

1886 – 1932

South African nurse

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About Daisy de Melker

Lived 1886 – 1932 (aged 46). Daisy de Melker was a South African criminal, serial killer and nurse.

Daisy Louisa C. de Melker (née Hancorn-Smith; 1 June 1886 – 30 December 1932), simply known as Daisy de Melker, was a South African nurse who was accused of poisoning two husbands with strychnine for their life insurance money; all she was found guilty of, however, was poisoning her only son with arsenic for reasons which are still unclear. De Melker is the second woman to have been hanged in South African criminal history.

De Melker was accused of three murders but only convicted of one, the killing of her son. The charges of poisoning her husbands were never proven in a court of law. It was William Sproat, the younger brother of her second husband Robert, who accused De Melker because he wanted Robert's will in favour of De Melker declared invalid. De Melker refused to refund an alleged loan from her mother-in-law, Jane Sproat, to Robert; she regarded it as a gift and argued that it was not stipulated in the will as a loan.

On one of her holidays in Rhodesia, Daisy fell in love with a young man named Bert Fuller, a civil servant in the Native Affairs Department at Broken Hill. They planned to marry in October 1907. However, Fuller contracted blackwater fever and died, with Daisy at his bedside, on the very day they had planned to marry. Fuller left a will bequeathing £100 to his fiancée.

First purported murder: William Cowle (first husband) Early on the morning of 11 January 1923, William Cowle became ill soon after taking epsom salts prepared by his wife. The first doctor who attended Cowle did not consider his condition serious and prescribed a bromide mixture. But Cowle's condition deteriorated rapidly; he took a turn for the worse soon after the doctor left. Daisy summoned the neighbours to help and called for another doctor. Cowle was in excruciating pain when the second doctor arrived. He foamed at the mouth, went blue in the face, and screamed in agony if anyone touched him until he died.

Faced with these symptoms, the second doctor suspected strychnine poisoning and refused to sign the death certificate. A postmortem was subsequently performed by the acting District Surgeon, Dr. Fergus. The cause of death was certified to be chronic nephritis and cerebral haemorrhage. Daisy, the sole beneficiary of her husband's will, inherited £1795.

Second purported murder: Robert Sproat (second husband) On 11 January 1926, 36-year-old Daisy married another plumber, Robert Sproat, who was ten years her senior. In October 1927, Robert became violently ill, suffering excruciating pain and severe muscle spasms similar to those experienced by Cowle. Robert recovered, only to suffer a second attack a few weeks later after drinking beer in the company of his wife and stepson Rhodes. He died on 6 November 1927. Dr. Mallinick, the attending physician, certified that the cause of death was arteriosclerosis and cerebral haemorrhage. No autopsy was performed. Following Robert's death, his widow inherited over £4000, plus a further £560 paid by his pension fund.

Third purported murder (of which Daisy de Melker was convicted): Rhodes Cecil Cowle (son) On 21 January 1931, Daisy married for the third time. Her new husband was a widower, Sydney Clarence de Melker; like her two previous husbands, he was a plumber. Before he worked as a plumber, Sydney had played for the Springboks (the South African national rugby team).

Late in February 1932, Daisy had travelled from Germiston on the East Rand to Turffontein, to obtain arsenic from a chemist. She used her former name, Sproat, and claimed that she required the poison to destroy a sick cat. Less than a week later, on 2 March 1932, Rhodes, aged 20, fell ill at work after drinking coffee from a thermos flask his mother had prepared for him. A fellow worker, James Webster, also become violently sick. Webster, who had drunk very little of the coffee, recovered within a few days, but Rhodes died at home at midday on 5 March. A postmortem followed and the cause of death was given as cerebral malaria. Rhodes was buried at New Brixton cemetery the following day; on 1 April, de Melker received £100 from Rhodes' life insurance policy.

Daisy's motives for killing her son Rhodes remain unclear. In the case of her first two husbands, the motive (if indeed she killed them) seemed to be financial gain. Rhodes seems to have been under the impression that he would come into an inheritance at age 21. One theory is that he was demanding more than his mother could give him and was becoming a burden to her. The most obvious answer is that he had become a disappointment to Daisy; she had pampered him all his life, but he rarely showed her any consideration in return.

Arrest, trial and execution By this time, Daisy's former brother-in-law, William Sproat, raised his suspicions concerning his brother Robert's death to the authorities. On 15 April 1932, the police obtained a court order permitting them to exhume the bodies of Robert, Cowle and Rhodes. Rhodes' remains were found to be in an unusually good state of preservation, which is characteristic of the presence of arsenic in large quantities. A state forensic pathologist was able to isolate traces of arsenic in the viscera, backbone and hair. Although the bodies of Cowle and Robert Sproat were largely decomposed, traces of strychnine were found in the vertebrae of each man. Their bones also had a pinkish discolouration, suggesting that the men had taken pink strychnine, which was common at the time. Traces of arsenic were also found in the hair and fingernails of James Webster, Rhodes' surviving colleague.

On the third count, however, he had come to the "inescapable conclusion" that De Melker had murdered her son. This was evident because: Rhodes Cowle had died of arsenic poisoning The coffee flask held traces of arsenic The accused had put the arsenic into the flask The defence of suicide was untenable

When the judge finally turned to pass sentence on De Melker, her face went pale but she still proclaimed her innocence. De Melker was condemned to death by hanging. The sentence was carried out on the morning of 30 December 1932 at Pretoria Central Prison.

Daisy de Melker in popular culture In 1934, Sarah Gertrude Millin wrote the novel Three Men Died, based on the de Melker case. In 1993, a television mini-series was made about Daisy de Melker, with Susan Coetzer in the title role. Ted Botha wrote the 2023 biography Daisy de Melker: Hiding among killers in the City of Gold.

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Important facts

People in Daisy de Melker's life

Named in this biography and alive at the same time

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Frequently asked questions

Who was Daisy de Melker?

South African nurse

When was Daisy de Melker born?

Daisy de Melker was born on 1 June 1886 in Eastern Cape.

When did Daisy de Melker die?

Daisy de Melker died on 30 December 1932 in Pretoria.

What was Daisy de Melker's occupation?

Daisy de Melker was a criminal, serial killer and nurse.

What nationality was Daisy de Melker?

Daisy de Melker was South African.

Sources & further reading

· Wikipedia: Daisy de Melker

· Wikidata: Q677305

· DBpedia: Daisy de Melker

Cite this page

APA: Biography.guide. (2026). Daisy de Melker. https://biography.guide/daisy-de-melker/

MLA: "Daisy de Melker." Biography.guide, https://biography.guide/daisy-de-melker/.

Chicago: "Daisy de Melker." Biography.guide. https://biography.guide/daisy-de-melker/.

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