Szczytt
The family is directly descended from Jan Niemira of Wsielub , the boyar coming from the Grand Duchy of Lithuania who was adopted during the Union of Horodło by Wojciech Jastrzębiec , the then bishop of Cracow and granted Polish coat of arm Jastrzębiec . 
<triplet> Union of Horodło <subj> Wojciech Jastrzębiec <obj> signatory <triplet> Wojciech Jastrzębiec <subj> Jastrzębiec <obj> family