an Entity references as follows:
Ivan Crnojević (Serbian Cyrillic: Иван Црнојевић, lit. 'Ivan the Black') was the lord of Zeta and Serbian leader from 1465 to 1490. Having formed an alliance with the Republic of Venice, he led the Serb resistance against the expanding Ottoman Empire He was successful at first but lost his realm in 1479. He resumed power in 1481 in Žabljak and soon founded Cetinje as the new capital of his state.