Hedwig of Silesia, also Hedwig of Andechs, a member of the Bavarian comital House of Andechs, was Duchess of Silesia from 1201 and of Greater Poland from 1231 as well as High Duchess consort of Poland from 1232 until 1238. She was canonized by the Catholic Church in 1267 by Pope Clement IV.
Saint Hedwig of Silesia with Duke Louis I of Brzeg and Duchess Agnés, Hedwig Codex, Lubin, 1353 (now in the J. Paul Getty Museum, California)
Hedwig intercedes between Henry and Konrad, 19th century depiction
Stained glass at St.Servatiuskirche Landkern
Scene from an altar of St. Hedwig of Silesia, Breslau, around 1430, restored in 1929, National Museum Warsaw
The House of Andechs was a feudal line of German princes in the 12th and 13th centuries. The counts of Dießen-Andechs obtained territories in northern Dalmatia on the Adriatic seacoast, where they became Margraves of Istria and ultimately dukes of a short-lived imperial state named Merania from 1180 to 1248. They were also self-styled lords of Carniola.
Coat of arms of Andechs Diessen