|Prince of Vidin|
|Born||5 December 1967|
María García de la Rasilla y Gortázar (m. 1994)
|House||Saxe-Coburg and Gotha-Koháry|
|Father||Simeon II of Bulgaria|
|Mother||Margarita Gómez-Acebo y Cejuela|
|Bulgarian royal family|
HRH The Princess of Koháry
Konstantin-Assen, Prince of Vidin, Duke of Saxony (born 5 December 1967) is the fourth son of Tsar Simeon II of Bulgaria and his wife Doña Margarita Gómez-Acebo y Cejuela. He is known also as Konstantin-Assen of Bulgaria and Konstantin-Assen of Vidin, the latter being the title of the fourth son of Bulgarian kings. He was born in Madrid. Simeon II was exiled as a child when Bulgaria ceased to be a monarchy, so Simeon's wife and children never received any royal titles from Bulgaria.
Konstantin-Assen studied business in Spain before gaining a Masters degree from Columbia University, United States. Currently he is the Country Manager for Barclays Bank in Spain, having previously served at Rothschild Bank in Madrid as Co-Head of their Spanish office.
In Madrid on 7 July 1994 Konstantin-Assen married Doña María García de la Rasilla y Gortázar, daughter of Álvaro García de la Rasilla y Pineda and his wife María de Gortázar e Ybarra, daughter of Manuel María de Gortázar y Landecho, 9th Count of Superunda, City Councilor of the Ayuntamiento of Bilbao, and wife (m. Algorta, Getxo, Biscay, 8 November 1932) María del Rosario de Ybarra y Bergé (Bilbao, 13 June 1908 -), niece of Ignacio de Gortázar e Ybarra, 10th Count of Superunda.
They have twins: Umberto (b. 20 November 1999) and Sofia (b. 20 November 1999).
Konstantin-Assen is the godfather of Infanta Sofía of Spain, the younger daughter of King Felipe VI of Spain. The King of Spain is in turn the godfather to Konstantin's own daughter, Sofia, along with her maternal grandmother María de Gortázar e Ybarra. Prince Umberto's godparents are Ramon Ros Bigeriego and his grandmother Queen Margarita.
Konstantin-Assen, Prince of Vidin
Cadet branch of the House of WettinBorn: 5 December 1967
Prince Tirso of Bulgaria
| Line of succession to the Bulgarian Throne
Prince Umberto of Bulgaria