Konstantin was the son of Đurađ I Balšić, the Lord of Zeta (r 1362–1378) and his wife, Teodora Dejanović (the daughter of despot Dejan). After his father"s death in 1378, he inherited a small parchment of land between the rivers of Bojana and Drin.
Konstantin was very faithful to Sultan Bayezid I. On 17 May 1395 he fought in the Battle of Rovine and witnessed the deaths of some Serb noblemen but managed to survive himself. In 1402, he was executed in Durazzo for unknown reasons, but it is generally believed that his absence at the Battle of Angora may have had something to do with this. Since Maria was married to Filip Maramonte, the Venetians and Ragusans often referred to Stefan Balšić as "Stefan Maramonte".
