Sultan Murad II married Hatice Halime around 1425,[3] at Edirne,[4] giving in marriage two of his sisters,[5] Selçuk Hatun to Halime's father and Sultan Hatun to Halime's brother, Kıvameddin Kasım Bey. On the same occasion he also married his five other sisters, Hatice, Fatma, Hafsa, İIaldı and Şehzade Hatun as well.[6] By this dynastic union, Murad established an alliance with a powerful tribe against his most formidable enemy in Anatolia, the Karamanid Türkmen, who blocked the expansion of the Ottomans to the east. The good relations were preserved during the reign of the next sultan Mehmed II who endowed members of the dynasty with mülks in the region of Plovdiv and Didymoteicho, later transformed into waqfs.[7]