(Greek and Latin name for the Hebrew Aramaic, Belshazzar; Babylonian, Belshazzar, "Bel protect the king")
According to the Bible the son of Nabuchodonosor, and the last king of Babylon.
While he was giving a banquet a mysterious hand wrote on the wall the words, Mane, Thecel, Phares, interpreted by Daniel as:
God hath numbered thy kingdom and hath finished it; thou art weighed in the balance and art found wanting; thy kingdom is divided and is given to the Medes and Persians. (Daniel 5)
That night Darius and the Medes invaded the city and Baltasar was slain.
Berosus, Herodotus, and the cuneiform inscription seem to agree on Nabonidus as the name of the last king of Babylon.
Josephus calls Baltasar his son and a grandson of Nabuchodonosor.
Several cuneiform inscriptions tell of Baltasar, so-called son of Nabonidus, leasing a house, purchasing wool, loaning money, residing in Tema, or with his army in Accad, fleeing from Sippar, and finally being imprisoned in Babylon.
New Catholic Dictionary