Matilda of Mecklenburg

Matilda of Mecklenburg (1293–1358), daughter of Henry II and Beatrix of Brandenburg, was the wife of Otto III, who ruled Lüneburg jointly with his brother William from 1330.

Her only son Otto drowned as a child in the Ilmenau near Emmendorf, so when Otto III died on 19 August 1352 he left no male heir and the principality passed to his brother. Her daughter Matilda (d. 1357) married Count Otto II of Waldeck; her other daughter Elisabeth died in 1386.