The daughter of a Russian billionaire has been unveiled as the buyer of the Greek island where shipping tycoon Aristotle Onassis married Jackie Kennedy.

Ekaterina Rybolovleva, daughter of business magnate Dmitry Rybolovlev, has bought Skorpios, her father’s investment office confirmed today. Russian oligarch Dmitry Rybolovlev is the largest shareholder in the Bank of Cyprus, with a 9.9% stake in the company.

The 24-year-old purchased the island in the Ionian Sea, west of Greece, from Onassis’ sole surviving heir, granddaughter Athina Onassis Roussel, 28, for a reported £100million.

‘Ekaterina is delighted that the trust has negotiated this purchase,’ a representative of Rybolovlev’s family investment office said, confirming she also acquired the neighbouring island of Sparti.

‘She regards the acquisition as a long-term financial investment.’

Miss Rybolovleva’s father Dmitry, co-founder of the Russian potash producer Uralkali, has a history of snapping up trophy properties and is the owner of the AS Monaco Football Club. He also acquired shares in Bank of Cyprus in year 2010.

The island of Skorpios was bought by Onassis in 1962, believed to have cost just 3.5 million drachmas, the equivalent of about £10,000.

Six years later it hosted his wedding to Jacqueline Kennedy, the widow of the late President John F Kennedy, who was assassinated in 1963.

After his death Skorpios passed to his daughter Christina, who died of a heart attack aged 37 in 1988, and then to Athina, the Daily Telegraph reports.

According to Greek press the contracts for the purchase of the private island are being drawn up by law firms in Athens and Geneva.

Farhad Vladi, whose company, Vladi Private Islands, has hundreds of islands on its books, told the paper that while he had not heard of the deal, it was possible Ms Onassis Roussel had decided to sell the island.

He said: ‘These Russian oligarchs have billions, so it may be that one of them came along and said “I will give you 100 million or 200 million euros for it”. Anything is possible.’

Mr Vladi said he was asked by Ms Onassis Roussel to carry out an evaluation of the island eight years ago.

It is believed she has little interest in spending time on the island, or in Greece.

He said the water comes from a mountain bought by Aristotle Onassis on a nearby island, and that anyone who bought the island would need to buy the mountain also, which he estimated would cost upwards of 100 million euros.

The mayor of the nearby island of Meganisi, Efstathios Zavitsanos, said the deal was likely to be a long-term lease since Aristotle Onassis’s will stated that Skorpios could not be sold or leave the family.

‘We have lived with the Onassis legend and it will never fade,’ he said. ‘You see, Aristotle was close to the local society, the fishermen and the residents. He was not just a rich man, he was truly loved.’

Like father, like daughter: Ekaterina, 24, is the daughter of Russian billionaire Dmitry Rybolovlev who owns AS Monaco Football Club

The island hosted many parties during the time of Aristotle Onassis, who is buried there, as is his daughter and his son, Alexander, who died in a plane crash in 1973.

It is also home to three residences, a helicopter landing pad and a boat quay.

Swiss-educated Ms Onassis Roussel is the only surviving descendant of the shipping magnate.

Ms Onassis Roussel was born in France, and is the only child of Christina Onassis and her fourth husband, Thierry Roussel.

She is married to Brazilian Olympic show jumper, Alvaro de Miranda Neto, and lives in Sao Paulo.

In the past there have been rumours that Giorgio Armani, Bill Gates, the founder of Microsoft, and Madonna were interested in buying the tiny island.

Russian oligarch Dmitry Rybolovlev is the largest shareholder in the Bank of Cyprus, with a 9.9% stake in the company.

But of course, very few of them are as fabulously wealthy with as much at stake as Rybolovlev, who caught Wall Street’s attention last year when he bought ex-Citi CEO Sandy Weill‘s $88 million penthouse apartment for his 23 year-old daughter, Ekaterina.

According to Forbes, Rybolovlev is the 119th richest man in the world. He started out his career as a doctor, but abandoned that in 1990 to start Uralkali, a fertilizer company.

In 1996 he was accused (and acquitted) of plotting to kill a business partner and spent 11 months in jail — a slight rough patch. He sold his stake Uralkali in 2010 for $6.5 billion, but still has an investment fund comprised mostly of industrial holdings.

Rybolovlev is also holding a $300 million for a Monaco penthouse called La Belle Epoque, a Hawaiian villa he bought from Will Smith for $20 million, and Donald Trump‘s Palm Beach mansion, Maison de L’Amitie, which he bought for $95 million in 2008.

My Anna J, Rybolovlev’s smaller boat

In 2011 he and other investors bought two-thirds of the Monaco football club, AS Moncao. He also owns a yacht called ‘My Anna’ worth $111 million.

Of course, with more money, as we know, there can also be more problems. In 2008 Rybolovlev’s wife filed for one of the most expensive divorces in history.

Elena Rybolovleva also sued her husband in a New York Court and when he bought Weill’s apartment, according to Bloomberg.

She alleged that her husband fraudulently transferred property he got during their marriage to buy the $88 billion penthouse in violation of a Swiss divorce Court order. She is also suing him for the Trump mansion in Florida.

At the same time, there have been conflicting reports for months about whether or not Cyprus and Russia have been working on a way for Rybolovleva, and other shareholders in the Bank of Cyprus, to increase their holdings and secure a $6 billion Russian loan for Cyprus in the process.

Rybolovleva would have to get special permission from the Cypriot Central Bank to increase his stake above 9.9%.

The Russian Finance Ministry at first denied these reports (which started getting attention in July of last year).

However, by the end of January 2013, Archbishop Chrysostomos II, the head of the Orthodox Church in Cyprus, was openly asking his Russian counterpart to convince Vladimir Putin to give Cyprus another loan — this one for $3.4 billion, says Bloomberg.

Maybe now Rybolovleva will get on board with the message, if he hasn’t already. At Davos Russian president Dmitry Medvedev said that the country would be on board to help out  “when our European partners also give something.”