The wedding of Countess Natacha Roumiantzoff-Pachkevitch and Archduke Alexander of Austria was dubbed the society wedding of the year.

The countess walked down the aisle in a long sleeved white gown in front of prestigious guests, including Queen Mathilde of Belgium and Grand Duke Henri of Luxembourg, the groom’s uncle. Royals came out in force to witness the ceremony.

Ahead of the glitzy ceremony, held in Belgium, Natacha, 33, described Alexander, 34,  as ‘the man of her dreams’.

But it seems just 18 months on, the newlywed dream has come crashing down – with the couple said to be separating. 

According to a source close to the couple, Archduke Alexander and Countess Natacha, who is descended from Russian nobility, ended their marriage in late 2024. Recently, she officially changed back to her maiden name.

Archduke Alexander is the youngest son and second youngest child of Archduke Carl Christian of Austria and Archduchess Marie Astrid of Austria. Marie Astrid is the daughter of Jean, Grand Duke of Luxembourg, who passed away in 2000. Her brother currently serves as the monarch of the microstate.

Meanwhile, Natacha is the daughter of Count Nicolas Pierre Roumiatzoff-Pachkevitch and Countess Marie Roumiatzoff-Pachkevitch.   

Natacha owns her own event planning business called RPZ Events and is currently based in Geneva, taking on weddings, corporate events and anniversary parties. 

She has changed her name to back to Natacha Roumiantzoff.

The source told Femail that Alexander and Natacha, who do not have any children,  did not spend the holidays together and claimed that she instead hosted an ‘anti-Valentine’s weekend’ in Ollons. 

Neither Alexander of Natacha responded to comment.  

Countess Natacha Roumiantzoff-Pachkevitch and Archduke Alexander of Austria married in a lavish ceremony in Belgium in September 2023 

Natacha (pictured left) appears to be throwing herself in her business, posting about the events she has organised 

On Valentine’s Day, Natacha posted that she had ‘sold out’ of her ski touring weekend which was being held from the 14 until the 16 of February this year.

She wrote: ‘Thrilled to announce that our event is now sold out. A huge thank you to everyone who signed up – we can’t wait to share this incredible weekend with you. 

‘Stay tuned for more events in the future. Get ready for an unforgettable weekend.’ 

Alexander is  the great-grandson of Charles I, the last Habsburg emperor of Austria and King of Hungary. 

Through his grandmother Archduchess Yolande of Austria, he comes from one of the noble families in Belgium, the Princess of Ligne. She died just a few weeks before the wedding aged 100. 

Other guests at their wedding included Grand Duchess Maria Teresa, Prince Guillaume and Princess Sibilla of Luxembourg and Prince Joachim of Belgium, Prince Jean of Luxembourg and Countess Diane de Nassau.

The event was held in collaboration with a number of businesses such as Laderach – the famous Swiss chocolate – but  it is unclear whether the Archduke was invited on this holiday.

This is a stark contrast to Valentine’s Day in 2024, where she posted an adorable throwback photograph of her wedding day to Alexander with the the song ‘The Best Is Yet To Come’ – however, it appears she made no reference to him this year. 

In November 2023, a little under two months after they married, Natacha shared another picture of the couple beaming after becoming husband and wife and wrote: ‘Extremely happy to have married the man of my dreams and organised my own wedding, what a beautiful personal and professional experience. Our Wedding was a Master Piece! Who’s next?’ 

It seems Natacha – who prides herself in being able to speak five languages – has been throwing herself into her work lately, sharing an image of herself at one of the lavish parties she helped throw. 

Natacha planned a ski trip during Valentine’s weekend this year and made no reference to her husband 

When Googling her business, it appears Natacha has changed her name back to her maiden title 

The couple were pictured lovingly whispering into each other’s ears on their wedding day in 2023 

MailOnline has contacted Natacha Roumiantzoff-Pachkevitch and the Habsburg royal house for comment and clarification.  

Austria was recently hit by the death of Archduchess Estelle who passed away aged 46, leaving European aristocracy in mourning last month.

The Archduchess leaves behind her husband  Archduke Carl Christian and their five children, Zita, 17, Anezka, 15, Anna, 12, Paola, 10 and Pier-Giorgia, four. 

Natacha did not accompany her husband to the funeral of Archduchess Estelle of Austria, the wife of his first cousin, Archduke Carl Christian. 

Announcing the death in the Carnet du Figaro bulletin, the family, who live in Nice, wrote: ‘Her husband, Archduke Carl Christian, their children, her parents, and her in-laws are deeply saddened to announce that Archduchess Estelle of Austria, née Lapra de Saint Romain, was called to God on Tuesday, March 4, 2025.’ 

The family laid her to rest on March 12 at the  Cimiez Monastery in Nice.

Her cause of death was cancer, according to Point De Vue.

Princess Astrid of Belgium joined the mourners alongside other royals including Prince Charles of Bourbon-Two Sicilies, Ferdinand of Habsburg, Princess Marie-Astrid of Luxembourg, and the Duke of Castro.

Estelle’s coffin was decorated with white flowers and each of her five children lit a candle and placed it on the coffin.

The priest praised the mother-of-five’s the ‘loving lucidity’, before Ava Maria played.