Kyril, Prince of Preslav

Kyril was born in Madrid, and graduated from Princeton University with an A.B. in physics in 1986 after completing a senior thesis titled "Velocity distribution of pulsars: a Monte Carlo simulation."^[2]

In 2007, he worked for GLG Partners, the London-based asset management branch of Lehman Brothers.^[3][4]

Kyril married María del Rosario Nadal y Fuster de Puigdórfila, who goes by "Rosario Nadal", on 15 September 1989. Her first cousin, Joaquín Felipe de Puigdórfila y Esteve is the current Count of Olocau.^{[citation needed]}

The religious ceremony was held at Saint Anne's Chapel, Royal Palace of La Almudaina, Palma de Mallorca. The Spanish tabloids ¡Hola! and Semana covered the event and reported that there were 400 guests, though only 125 could be accommodated in the chapel for the religious ceremony.^{[citation needed]} According to Majesty magazine at the time, King Juan Carlos, Queen Sofía, Infanta Elena, Infanta Cristina of Spain, and Felipe VI of Spain attended the occasion.^{[citation needed]}

The couple have three children:

• Princess Mafalda-Cecilia (born 27 July 1994). On 28 May 2022 married civilly Marc Abousleiman in Majorca, separating in 2024.
• Princess Olimpia (born 14 December 1995)
• Prince Tassilo (born 20 January 2002)

Through their mother, Kyril’s children descend from the Aztec Emperor Montezuma II.^[5] A former model and muse for the fashion designer Valentino Garavani, Rosario Nadal works professionally as an art consultant.^[6] In 2007, she wrote an article for Architectural Digest.^[7]

In October 2009, it was announced by the Spanish news agency EFE that, according to a report from an anonymous source close to Simeon of Bulgaria, the couple were going to live separately. The source claimed, however, that they don't presently have any plans or intention to divorce.^[8]

The couple appeared together at the wedding of Victoria, Crown Princess of Sweden on 19 June 2010.^{[citation needed]}

On 28 October 1987, Kyril escorted fellow Princeton graduate Brooke Shields to a dinner/fashion show hosted by Christian Lacroix in New York City.^{[9][unreliable source?]} Until his marriage, Kyril's purported romantic interests were tracked by European celebrity magazines, notably ¡Hola! in Spain.^{[citation needed]}

He owns a vacation residence near Campos, Majorca, where he is a keen surfer.^{[citation needed]}

He married Rosario Nadal in 1989. They were known to socialize with many celebrities and royalty, such as Gwyneth Paltrow, Hugh Grant, the Crown Prince Haakon Magnus and Mette Marit of Norway, as well as the Spanish royal family.^{[citation needed]} They separated in 2009. Since 2017, he has been in a relationship with British businesswoman Katharine Butler.^[10]

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