According to some accounts, Renczi was born in Bucharest in 1903, but in view of the dates of her alleged crimes, a date in the late 19th century would be more appropriate.
The accounts of her life are lacking in verifiable documentary supporting evidence.
Her mother died when she was 13 and she moved with her father to Nagybecskerek (today Zrenjanin, Serbia) where she attended a boarding school.
By the age of fifteen, she had become increasingly unmanageable and had frequently run away from home with numerous boyfriends, many of whom were significantly older than she was.
Early childhood friends described Renczi as having an almost pathological desire for constant male companionship and possessing a highly jealous and suspicious nature.
Shortly before the age of twenty, her first marriage was to a wealthy Austrian banker named Karl Schick, many years her senior.
They had a son named Lorenzo.
Left at home daily while her older husband worked, she began to suspect that her husband was being unfaithful.
One evening, in a jealous rage, Renczi poisoned his dinner wine with arsenic and began to tell family, friends, and neighbors that he had abandoned her and their son.
After approximately a year of "mourning", she then declared that she had heard word of her supposedly estranged husband's death in a car accident.
Shortly after allegedly hearing the news of her first husband's "automobile accident", Renczi remarried, this time to a man nearer her own age.
However, the relationship was a tumultuous one and Renczi was again plagued by the suspicion that her new husband was involved in extramarital affairs.
After only months of marriage the man vanished and Renczi then told friends and family that he had abandoned her.
After a year had passed, she then claimed to have received a letter from her husband proclaiming his intentions of leaving her forever.
This was her last marriage.
Although Renczi did not remarry, she spent the next several years carrying out a number of affairs, some clandestine with married men, and others openly.
The men came from an array of backgrounds and social positions.
All vanished within months, weeks, and in some cases, even days after becoming romantically involved with her.
When connected to men she was openly having an affair with, she invariably concocted stories of them being "unfaithful" and having "abandoned her".
She was caught after having poisoned her last lover, a bank officer named Milorad; his wife reported his disappearance to the police, who ignored her.
Nevertheless, she pursued her own investigation and rapidly found that Vera was her husband's mistress.
She went back to the police, who sent two inspectors to the chateau.
She admitted to them that Milorad had been her lover, but claimed he had quit her.
Impressed by her beauty, wealth, and excellent reputation, the police abandoned their search.
The wife went back to the police and started to ask questions which should have been asked long before: where was her husband Joseph?
Where was their son?
What happen to the numerous other men who people knew were her lovers and had also disappeared?
The police went back to see her; not only did she then deny that Milorad was her lover, which she had admitted before, but the police had proof, a love letter sent by her to her lover.
The police got a search warrant and discovered a locked round cellar underground.
In it were 35 spaces, each with a zinc-lined coffin inside.
In the middle of the cellar were a red armchair, a big church candle, and an empty bottle of champagne.
She told them that the coffins contained family members, but they insisted on opening one coffin.
Inside, they found the decomposed body of a man; upon opening the rest, they found the same thing.
After she was arrested, she confessed that she had poisoned all of them with arsenic when she suspected they had been unfaithful to her or when she believed their interest in her was waning.
She also confessed that on occasion she liked to sit in the armchair, surrounded by the coffins of all her former lovers.
1920
Vera Renczi (dubbed the Black Widow, Mrs. Poison or Chatelaine of Berkerekul), was a Romanian serial killer who was charged with poisoning 35 individuals including her two husbands, multiple lovers, and her son with arsenic during the 1920s.
1925
Journalist Otto Tolischus published the earliest known article in the United States in May 1925 based on letters from the readers without naming any reference.
Renczi's story has surfaced repeatedly, but without traceable details such as specific dates of her birth, marriages, arrest, conviction, incarceration or death.
1946
Most sources place the murders at Berkerekul, Yugoslavia (present-day Serbia), or Bečkerek, which was renamed Zrenjanin in 1946; however, the spelling "Berkerekul" is unknown for this city.
1972
In 1972, the Guinness Book of World Records found no authoritative sources to support the claim that 35 people were killed by Renczi in early 20th-century Austro Hungarian Empire.
