Catherine of Bosnia, Grand Princess of Hum
" For other people named Catherine of Bosnia, see Catherine of Bosnia( disambiguation)."
Catherine of Bosnia( Bosnian:" Katarina Kotromanić Stjepanova")( b. 1294- d. 1355) was sister of Stephen II, Ban of Bosnia.
Maria Palaiologina Kantakouzene
Maria Palaiologina Kantakouzene  was a Byzantine princess, niece of emperor Michael VIII Palaiologos, and empress consort of Constantine Tikh of Bulgaria and Ivaylo of Bulgaria.
She is the most powerful Empress of Bulgaria, ruling as a regent from 1271 to 1279.
Desislava of Bulgaria
Desislava of Bulgaria was daughter of Tsar Ivan Alexander of Bulgaria and his second wife Theodora, a converted Jewish woman.
Catherine of Bulgaria
Catherine of Bulgaria (Bulgar: Екатерина, "Ekaterina"; died after 1059) was Empress-consort to Byzantine emperor Isaac I Komnenos and co-regent of Constantine X for a period after the abdication of her spouse in 1059.
She was a daughter of Ivan Vladislav of Bulgaria and his wife Maria, and thus a sister of Presian and Alusian.
Catherine was also a paternal aunt of Maria of Bulgaria.
Subdivisions of Bulgaria
Subdivisions of Bulgaria:
Catherine of Austria, Lady of Coucy
Catherine of Austria (9 February 1320 – 28 September 1349) was the oldest daughter of Leopold I, Duke of Austria and his wife Catherine of Savoy.
She was a member of the House of Habsburg by birth and married the Lord of Coucy.
Kiril, Prince of Preslav
Prince Kyril of Bulgaria, Prince of Preslav (Kyril Heinrich Franz Ludwig Anton Karl Philipp; 17 November 1895 – 1 February 1945) was the second son of Ferdinand I of Bulgaria and his first wife Marie Louise of Bourbon-Parma.
He was a younger brother of Boris III of Bulgaria and a prince regent of the Kingdom of Bulgaria from 1943 to 1944.
Ivan Vladislav of Bulgaria
Ivan Vladislav  ruled as emperor (tsar) of Bulgaria from August or September 1015 to February 1018.
The year of his birth is unknown; he was born at least a decade before 987, but probably not much earlier than that.
Saved from death by his cousin Gavril Radomir, the Bulgarian Emperor, in 976, Ivan Vladislav murdered him in October 1015 and seized the Bulgarian throne.
Due to the desperate situation of the country following the decades-long war with the Byzantine Empire, and in an attempt to consolidate his position, he tried to negotiate truce with the Byzantine emperor Basil II.
After the failure of the negotiations he continued the resistance, attempting unsuccessfully to push the Byzantines back.
During his period of rule, Ivan Vladislav tried to strengthen the Bulgarian army, reconstructed many Bulgarian fortresses and even carried out a counter-offensive, but he died at the Battle of Dyrrhachium in 1018.
After his death his widow, Empress Maria, the Patriarch and most of the nobility finally surrendered to Basil II, who soon suppressed the last remnants of resistance and brought about the end of the First Bulgarian Empire.
Ivan Vladislav left a mixed heritage, varying from a reputation of being a ruthless murderer to a hero defending his country as best as he could.
The descendants of Ivan Vladislav entered the Byzantine nobility and rose to the highest ranks of the hierarchy.
Two women of his family became empresses of the Byzantine Empire and others became military commanders or high-ranking officials.
He was an ancestor of the Byzantine emperor John II Komnenos.
Ana-Neda
Ana- Neda( Bulgarian and; fl. 1323- 1324) was the Empress consort of Bulgaria briefly in 1323- 1324 as the spouse of" Despot of Vidin" Michael Shishman who was elected as Emperor of Bulgaria in 1323.
She was the daughter of Serbian King Stefan Uroš II Milutin and Princess Ana Terter, daughter of George I of Bulgaria.
From the marriage with Michael, they had three sons, one of whom was Ivan Stephen of Bulgaria, later briefly the Emperor of Bulgaria( 1330 – 1331).
Keratsa of Bulgaria
Keratsa-Maria of Bulgaria( 1348–1390) was Princess of Bulgaria during the Second Bulgarian Empire and Empress of Byzantine Empire.
She was the daughter of Tsar Ivan Alexander of Bulgaria and his second wife, a converted Jew, Theodora.

Question: Which country Catherine Of Bulgaria's father is from?
Answer: First Bulgarian Empire