Kashshaya

Another official named in Jeremiah 39:3 is also known from cuneiform sources as ­Nergal-Sharezer. Jeremiah 39:13–14 goes on to say that he was instrumental in releasing Jeremiah from the Courtyard of the Guard where he was being held as prisoner. Nergal-Sharezer was married to Nebuchadnezzar’s daughter Kashshaia and later became king of Babylon (559–556 BC), the Neriglissar of the classical sources (Wiseman 1985: 10–12; Leick 1999: 122).

Origins

https://en.wikipedia.org/wiki/Nebuchadnezzar_II

Three of Nebuchadnezzar's daughters are known by name:[30]

Kashshaya (Akkadian: Kaššaya)[94] – attested in several economic documents from Nebuchadnezzar's reign as "the king's daughter".[95] Her name is of unclear origin; it might be derived from the word kaššû (kassite).[96] Kashshaya is attested from contemporary texts as a resident of (and landowner in) Uruk.[30] Kashshaya is typically, although speculatively, identified as the daughter of Nebuchadnezzar who married Neriglissar.[88][97]