Izabela Morțun hailed from the historical region of Moldavia: her place of birth is given as Săucești, Bacău County, Alexandra Andrei, "Omul și arta. Izabela Sadoveanu", in Timpul de Gorj, Nr. 8 (416)/2008 but she may also have been born in Hertsa region.Călinescu, p.667 Her parents were Gheorghe Grigore and Eleonora Morțun, uncle and aunt of the socialist Vasile Morțun. By virtue of birth, Izabela was related to several leading Moldavian intellectual and boyar families: her own branch, the Morțunești, was intermarried with the Racovițești, the Movilești and even the ancient House of Bogdan-Mușat. Also among her relatives was the Arbore family, whose members include socialists Zamfir and Ecaterina Arbore.
