The TsarThe Tsaritsa Princess Marie Louise of Bulgaria (Bulgarian: Княгиня Мария Луиза Българска; born 13 January 1933) also known as Marie Louise Borisova Saxe-Coburg-Gotha, is the daughter of Tsar Boris III and Tsaritsa Ioanna and the older sister of Simeon II of Bulgaria.

[1] Her baptism in the Bulgarian Orthodox Church caused controversy at the time because her mother had promised to raise her children as Catholics.

[citation needed] The couple had two sons:[1] On 16 November 1969, she married Bronisław Tomasz Andrzej Chrobok (born 27 August 1934 in Katowice, Poland), in Toronto, Canada.

[7] On 13 May 2012, at the 18th commencement ceremony, Princess Marie Louise received an honorary doctoral degree in Humane Letters from the American University in Bulgaria.

[8] In 2001, she visited and toured the church of St John of Rila the Wonderworker in Chicago's Portage Park community area.