Jan Gruszczyński
Jan Gruszczyński was a medieval Bishop of Kraków , Kujawski , Archbishop of Gniezno , Chancellor of the Crown and active diplomat . 
<triplet> Jan Gruszczyński <subj> Bishop <obj> position held <subj> Archbishop of Gniezno <obj> position held <subj> Chancellor of the Crown <obj> position held <subj> diplomat <obj> occupation