sentences:  Jonas Goštautas
  
  Jonas Gostautas or Goštautas () (c. 1383 in Geranainys – 1 September 1458 in Vilnius) was a Lithuanian nobleman from the Grand Duchy of Lithuania of the Goštautai 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.