Tsar Boris III of Bulgaria

Tsar of Bulgaria from 1918-1943
britannica.com

Kristalina Georgieva living

CEO of the World Bank, managing director of the International Monetary Fund (IMF), economist, financier, VP of the European Commission (EC) from 2014-2016
1953- (71)

Princess Marie Louise of Bulgaria living

Princess of Bulgaria, daughter of Tsar Boris III
1933- (91)

Tsar Simeon II of Bulgaria, Saxe-Coburg-Gotha living

Tsar of Bulgaria from 1943-1946, politician, former Prime Minister of Bulgaria from 2001-2005
1937- (87)
kingsimeon.bg