Matilda of Brunswick-Lüneburg

Mechthild of Brunswick-Lüneburg (1276–1318) was the only daughter of Albert I of Brunswick-Lüneburg and Alessia of Montferrat. In 1291 she married Henry III of Głogów, allying the Welf and Piast dynasties against Henry V the Fat of Legnica, and bore him nine children.

When Henry died in 1309 she regented his Silesian duchies until 1312, although their eldest son Henry IV was already of age. Under his will Głogów was hers as a dower. She died on 26 April 1318, and Głogów passed jointly to her sons Henry IV and Przemko II.