Adelheid of Ravensberg

Adelheid of Ravensberg (c. 1270–1338) was the daughter of Count Otto III of Ravensberg and Hedwig of Lippe. In 1297 she married Otto I, Landgrave of Hesse, becoming landgravine when he inherited Hesse in 1308.

Her children included Henry II, called the Iron, who ruled Hesse from 1328, and Otto, who became Archbishop of Magdeburg in 1331. She survived her husband by ten years and died at Marburg, where she was buried in the Church of St. Elizabeth.