[3] Kantakuzina Katarina Branković gave birth to five children, Hermann (1439–1452), George (1444–1445), Albert (†1448) and the twin Elisabeth (1441–1455) and Catherine (1441-1441).

[3] In 1453 or 1454 she entrusted the creation of Varaždin Apostol, hand-written Orthodox liturgical book and oldest preserved text in Cyrillic from the territory of today's Croatia, to a group of three transcribers.

[3] After Ulrich II was killed in the Siege of Belgrade in 1456, Katarina gave up all of her possessions in modern-day Croatia and Slovenia except of Krško in exchange for yearly allowances of 2,000 Ducats, and in 1460 she sold all of her possessions in Slavonia to Holy Roman Emperor Frederick III for 29,000 Goldguldens.

[3] She decided to start traveling across Italy, Corfu, Dubrovnik and in the end came back to Old Serbia (modern-day North Macedonia) to visit her sister Mara Branković that was widow of Ottoman Sultan Murad II.

The character of Katarina Branković is portrayed by Eva Dedova in the Netflix original historical docudrama Rise of Empires: Ottoman (2020).