Answer the following question: What key details about jonas gostautas can be extracted from the following bio? Bio: jonas gostautas or gostautas -lrb- -rrb- -lrb- c. 1383 in geranainys -- 1 september 1458 in vilnius -rrb- was a lithuanian nobleman from the grand duchy of lithuania of the gostautai noble family , a politician and skillful land owner . he served as chancellor of lithuania between 1443 and 1458 and was a very close advisor and mentor to casimir iv jagiellon before the grand duke became the 3rd jagiellonian king of poland . '' gostautas '' was not his surname , but a pagan lithuanian given name retained after baptism by his immediate ancestor , while '' jonas '' was his christian name . his heirs , e.g. , his sons like martynas gostautas , perhaps inherited the name as a surname . in 1413 at the union of horodlo jonas was adopted by the polish nobles into the coat-of-arms '' abdank '' clan . first mentioned in 1413 , jonas gostautas served as a marshal during the late reign of vytautas the great . following death of vytautas he continued his duties under Svitrigaila and sided with him against vytautas ' brother sigismund kestutaitis . in 1431 while defending lutsk from the sigismund kestutaitis ' polish-lithuanian assault he was captured and imprisoned . when fighting erupted between Svitrigaila and sigismund kestutaitis for grand duke title , jonas gostautas supported sigismund kestutaitis , who appointed him as governor of smolensk later on . he served as governor of smolensk for around four years until 1440 assassination of grand duke sigismund kestutaitis forced him to leave this position . serving many duchy rulers he managed to gain and hold tremendous wealth and thus he became one of the richest noblemen of lithuania . death of sigismund kestutaitis left empty the throne of the grand duchy of lithuania and jonas gostautas , as well as other noblemen of the council of lords supported casimir jagiellon as a candidate for the throne . polish magnates hoped and insisted that thirteen-year-old boy remained only a vicegerent of wladyslaw iii , the polish king and his brother , in lithuania . but when polish...
Answer:
- coa is abdank- mother is nn buczacka h. abdank- spouse is dorota zadora h. zadora elzbieta- death date is 1458- father is andrzej gasztod- birth date is c. 1383- name is jan gasztod- image is image : herb abdank.svg