Coat of arms from Ulrich Richentals Armorial,with  explanation.It is dated in 1415,from Council of Constance and this print is from 1483.<a rel="nofollow" class="external autonumber" href="http://www.armorial.dk/german/Richental.pdf">[1]</a>
It is identified asthat  of <i>herzog dyspolt zu ratzen</i>, i.e. the count of Rascia. The ruler of the central part of Rascia, i.e. the despotate of Epirus with the capital Arta, was the albanian Yaqub Spata lord of Arta, r.1414-16.
<bdi><a href="https://en.wikipedia.org/wiki/en:Ulrich_of_Richenthal" class="extiw" title="w:en:Ulrich of Richenthal"><span title="chronicler">Ulrich of Richenthal</span></a>
</bdi>
1415
Cropped from this <a rel="nofollow" class="external text" href="http://inkunabeln.digitale-sammlungen.de/JPG100_r_178_092.jpg">file</a>,from this <a rel="nofollow" class="external text" href="http://inkunabeln.digitale-sammlungen.de/Seite_R-178,1,l8b.html">page</a>.