Background
After the death of his father Bernard, Frederick ruled the Principality of Lüneburg jointly with his brother Otto.
After the death of his father Bernard, Frederick ruled the Principality of Lüneburg jointly with his brother Otto.
The highlights of their rule were a major expansion of Celle Castle and numerous reforms to improve the legal position of farmers vis-à-vis their landlords. In 1452 he had a monastery built on the Heylig Kreuz ("Holy Cross") and brought Franciscan monks to Celle. Frederick was interred in the church of the Franciscan monastery that he had founded in Celle.