Sophia of Werle
Sophia of Werle (d. after 1339) was a daughter of Lord Nicholas II of Werle and Richeza, daughter of King Eric V of Denmark. In 1310 her uncle King Eric VI betrothed her to Duke Erik of Södermanland and sent her to Sweden, but Erik married another in 1312 and she returned home.
Around 1315 she married Count Gerhard III of Holstein-Rendsburg, later ruler of Denmark. Her sons Henry II and Nicholas succeeded as counts, and through Henry she was an ancestress of the House of Oldenburg.