Question: What is the date of death of Vlatko Vuković's father?

Knowledge 1: Vlatko Vuković
Vlatko Vuković Kosača (died 1392) was a 14th-century Bosnian nobleman, duke of duchy of Hum, Grand Duke of Bosnia  and one of the best military commanders of King Tvrtko I, for whom he governed Hum (part of modern-day Herzegovina), which was part of the Banate of Bosnia and later Kingdom of Bosnia.Vlatko was probably a son of duke Vuk Kosača, often regarded as founder of the Kosača noble family. [SEP] Knowledge 2: Vuk Kosača
Vuk (Cyrillic: Вук; 1317–1359), also called "Hran", was a powerful magnate in service to the Serbian king Stefan Dušan (r. 1331–55).Vuk was the progenitor of the Kosača family, later influential in the Kingdom of Bosnia in the late 14th- and first half of the 15th century.Ragusan chronicler Mavro Orbini (1563–1614), write that Vuk was born in 1317, as son of an unnamed "knezcountknyaz") from Rudine.After an incident during the two families' hunting trip in Upper Drina, where both had possessions, in which Branko Rastislalić lost his life sometime after 1351, Vuk, being responsible for Branko's death, fled to Hungary.After reconciling with the relatives of Branko, he joined (or returned to) the court of Emperor Stefan Dušan.Nevertheless, a member of the Rastislalić family eventually took revenge on Vuk, and murdered him in Rudine in 1359.Vuk distinguished himself in the military of the emperor, for which he was awarded land around Rudine, which was located somewhere in Upper Drina area, in eastern Bosnia (present-day Bosnia and Herzegovina).Vuk's son, Vlatko (1388–d. 1392), was a celebrated military commander in the service ofBosnian king Tvrtko I. He also had another son, Hranja.
Knowledge 1: Vlatko Vuković
Vlatko Vuković Kosača (died 1392) was a 14th-century Bosnian nobleman, duke of duchy of Hum, Grand Duke of Bosnia  and one of the best military commanders of King Tvrtko I, for whom he governed Hum (part of modern-day Herzegovina), which was part of the Banate of Bosnia and later Kingdom of Bosnia.Vlatko was probably a son of duke Vuk Kosača, often regarded as founder of the Kosača noble family. [SEP] Knowledge 2: Etan Boritzer
Etan Boritzer( born 1950) is an American writer of children ’s literature who is best known for his book" What is God?" first published in 1989.His best selling" What is?" illustrated children's book series on character education and difficult subjects for children is a popular teaching guide for parents, teachers and child- life professionals.Boritzer gained national critical acclaim after" What is God?" was published in 1989 although the book has caused controversy from religious fundamentalists for its universalist views.The other current books in the" What is?" series includeWhat is Love?,What is Death?,What is Beautiful?,What is Funny?,What is Right?,What is Peace?,What is Money?,What is Dreaming?,What is a Friend?,What is True?,What is a Family?,What is a Feeling?"The series is now also translated into 15 languages.Boritzer was first published in 1963 at the age of 13 when he wrote an essay in his English class at Wade Junior High School in the Bronx, New York on the assassination of John F. Kennedy.His essay was included in a special anthology by New York City public school children compiled and published by the New York City Department of Education.Boritzer now lives in Venice, California and maintains his publishing office there also.He has helped numerous other authors to get published through" How to Get Your Book Published!" programs.Boritzer is also a yoga teacher who teaches regular classes locally and guest- teaches nationally.He is also recognized nationally as an erudite speaker on" The Teachings of the Buddha."
Knowledge 1: Vlatko Vuković
Vlatko Vuković Kosača (died 1392) was a 14th-century Bosnian nobleman, duke of duchy of Hum, Grand Duke of Bosnia  and one of the best military commanders of King Tvrtko I, for whom he governed Hum (part of modern-day Herzegovina), which was part of the Banate of Bosnia and later Kingdom of Bosnia.Vlatko was probably a son of duke Vuk Kosača, often regarded as founder of the Kosača noble family. [SEP] Knowledge 2: Hrana Vuković
Hrana Vuković (1370 – 15 March 1435) was a Bosnian magnate who ruled the area between Neretva and Drina rivers in Bosnia with the title "Grand Duke of Bosnia" prior to 1380.He was a father of Sandalj Hranić and brother of Vlatko Vuković.After his death, he was succeeded by Vlatko Vuković as a head of Vuković-Kosača family, and Hrvoje Vukčić as a Grand Duke of Bosnia.

Answer: 1359