Hagar said to be the same as Keturah
Religious views
Rabbinical commentary
Rabbinical commentators asserted that Hagar was Pharaoh's daughter. The midrash Genesis Rabbah states it was when Sarah was in Pharaoh's harem that he gave her his daughter Hagar as servant, saying: "It is better that my daughter should be a servant  in the house of such a woman than mistress in another house". Sarah treated Hagar well, and induced women who came to visit her to visit Hagar also. However Hagar, when pregnant by Abraham, began to act superciliously toward Sarah, provoking the latter to treat her harshly, to impose heavy work upon her, and even to strike her (ib. 16:9).Some Jewish commentators identify Hagar with Keturah (Jewish Babylonian Aramaic: קְטוּרָה, romanized: Qəṭurɔ꞉), the woman Abraham married after the death of Sarah, stating that Abraham sought her out after Sarah's death. It is suggested that Keturah was Hagar's personal name, and that "Hagar" was a descriptive label meaning "stranger". This interpretation is discussed in the Midrash and is supported by Rashi, Judah Loew ben Bezalel, Shlomo Ephraim Luntschitz, and Obadiah ben Abraham Bartenura.  Rashi argues that "Keturah" was a name given to Hagar because her deeds were as beautiful as incense (hence: ketores), and/or that she remained chaste from the time she was separated from Abraham—קְטוּרָה derives from the Aramaic word "restrained". The contrary view (that Keturah was someone other than Hagar) is advocated by the Rashbam, Abraham ibn Ezra, David Kimhi, and Nachmanides. They were listed as two different people in the genealogies in the Book of Chronicles (1 Chronicles 1:29–33).
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