Adelaide "Irene" of Brunswick

• https://en.wikipedia.org/wiki/Irene_of_Brunswick

Irene of Brunswick, born Adelheid, (Greek: Ειρήνη; c. 1293 – 16/17 August 1324) was the first wife of Andronikos III Palaiologos,[1] and by marriage Byzantine empress, although she died before her husband became senior emperor.

-https://de.wikipedia.org/wiki/Adelheid_von_Braunschweig-Grubenhagen

http://genealogy.euweb.cz/welf/welf3.html#AIH1

Albrecht I Herzog von Braunschweig (1252-79), *1236, +Braunschweig 15.8.1279; 1m: Braunschweig 1254 Elisabeth de Brabant (*1243 +1261); 2m: Kenilworth 1263 Alessina de Montferrat (*ca 1237, +6.2.1285); all kids by 2m.

• A1. Herzog Heinrich I Herzog von Braunschweig-Grubenhagen, *1267, +Salzderhelden 7.9.1322; m.1282 Agnes von Meissen (+after 1.2.1332), dau.of Mgve Albrecht von Meissen
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  • B12. Adelheid=Irene, *ca 1293, +Rhaidestes 16.8.1324; m.III.1318 Emperor Andronicos III Paleologos of Byzantium (+15.7.1341)