for financial safeguarding of her sons, she later also purchased the lordship of wildenbruch and further estates. upon the death of his mother in 1689, philipp william and his brothers inherited a vast territory including three towns, three castles, 33 villages, and 24 farmsteads. in 1692 he came to terms with his elder half-brother elector frederick iii in 1692, obtained a considerable severance payment and the title of a "margrave of brandenburg-schwedt"; intensively cultivating his dominions and furnishing his castle in a baroque style at great expense. his younger brother albert frederick (1672–1731) became a general lieutenant and grand master of the order of saint john; the third-born, charles philip (1673–1695) likewise became an officer and shortly before his death secretly married the piemontese noblewoman caterina di balbiano, who called herself "madame de brandebourg" as a widow. the youngest of dorothea's sons was margrave christian ludwig (1677–1734), officer and administrator of halberstadt, the honoree of bach's "brandenburg concertos".