Family: Siemowit Piast of Masovia / Aleksandra Olgierdówna Giedyminowicz von Litauen (F8523)
m. 1387
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Male
Siemowit Piast of Masovia
Birth Abt 1353 Death 21 Jan 1426 Poland 
Burial Jan 1426 Poland Marriage 1387 Vilnius, Vilniaus Apskritis, Lithuania Father Siemowit Piast | F7296 Group Sheet Mother Eufemia Přemyslovna | F7296 Group Sheet
Female
Aleksandra Olgierdówna Giedyminowicz von Litauen
Birth Abt 1360 Death 19 Jun 1434 Burial Father Olgierd Giedyminowicz | F7295 Group Sheet Mother Julianna Rurykowicz | F7295 Group Sheet
Female
+ Cymburgis of Masovia
Birth 1394 Poland Death 28 Sep 1429 Austria Burial Austria Spouse Ernst von Habsburg Österreich, Herzog der Eiserne | F9588 Marriage