Shi da matarsa ta biyu, Irmgard Elsa Kaul, suna da 'ya mace, Carolin Masur, wanda ya zama mawaƙin opera. Irmgard Masur ya mutu a shekarar 1972 a wani hatsarin mota wanda Masur ya ji rauni sosai. A shekarar 1975, ya auri matarsa ta uku, soprano da violist, Tomoko Sakurai: suna da ɗa, Ken-David, mawaƙi na gargajiya da jagora. Tambaya: Sau nawa Masur ya yi aure?
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