Matilda of Swabia, a member of the Conradine dynasty, was Duchess of Carinthia by her first marriage with Duke Conrad I and Duchess of Upper Lorraine by her second marriage to Duke Frederick II. She played an active role in promoting her son, Duke Conrad the Younger, as a candidate for the German throne in 1024 and to this end corresponded with King Mieszko II Lambert of Poland.
Miniature of Matilda and Mieszko II Lambert, King of Poland, on the dedicatory page of the Liber de divinis officiis, written at the Abbey of Saint Gall c. 1125 (Düsseldorf, Universitäts- und Landesbibliothek, Ms.C 91, (lost), fol. 3r.)
Mieszko II Lambert was King of Poland from 1025 to 1031, and Duke from 1032 until his death.
Mieszko Lambert receiving a liturgical book from Matilda of Swabia, 1000–1025
Richeza of Lotharingia, the niece of Emperor Otto III and Mieszko Lambert's consort
Gniezno Cathedral, where Mieszko Lambert was crowned King of Poland in 1025.
Division of Poland between Mieszko Lambert (red) and his brothers Otto Bolesławowic (blue) and Dytryk (green) following the Treaty of Merseburg in 1032.