Overview
Sidonie of Poděbrady was a duchess consort of Saxony, as the wife of Albert III. She was a daughter of George of Poděbrady, King of Bohemia, and his first wife Kunigunde of Sternberg. She was the twin sister of Catherine of Poděbrady, wife of Matthias Corvinus of Hungary.
From Wikipedia (CC BY-SA 4.0).