Prince Mirko of Panagyurishte, eldest son of Prince Kubrat of Bulgaria and a grandson of Bulgaria's last Tsar, Simeon II, has announced his engagement to Dr. Marta Embid. The couple, who have been together since 2023, are set to marry next summer in Madrid (Hello! Magazine).

The announcement was reported by Hello! Magazine on 30 July 2026, with Tatler covering the news the previous day. Both outlets reference Prince Mirko's Instagram account, @mirkosajonia, where images of the couple have been shared (Hello! Magazine; Tatler).

The match is, in one sense, a medical one. The two met while completing their medical training in Madrid. Prince Mirko studied medicine at the University of Navarra and specialised in general and digestive surgery during his residency at Hospital Clínico San Carlos, a major teaching hospital in the Spanish capital. Dr. Embid trained at the same hospital, specialising in anesthesiology and resuscitation (Hello! Magazine).

Medicine runs in the family. Prince Mirko's father, Prince Kubrat, is a surgeon who has practiced in Spain for decades. Simeon II, the last Tsar of Bulgaria, reigned from 1943 until the monarchy was abolished in 1946 and later served as Bulgaria's prime minister from 2001 to 2005 — one of the few former monarchs in modern history to return to elected office (Hello! Magazine).

Prince Mirko was born in Madrid, and the Spanish capital has remained the centre of his personal and professional life. The wedding location follows that pattern: the ceremony will take place in Madrid next summer, though no specific date or venue has been announced (Hello! Magazine).

The couple's public appearances together have been occasional but notable. In April 2024, they attended the wedding of Madrid Mayor José Luis Martínez-Almeida and Teresa Urquijo, an event that drew coverage from Spanish society pages (Hello! Magazine).

What makes this engagement stand out is the way it threads together a deposed royal house and a thoroughly modern professional life. Bulgaria's monarchy ended eight decades ago, yet the family's ties to Spain — where Simeon II lived in exile and where his descendants have built careers in medicine rather than ceremonial roles — remain close. The wedding next summer will be a royal event without a kingdom, celebrated in the city where both bride and groom trained and where the groom's family has long been rooted.