1. Brahman is not a name, but rather a way to refer to the Absolute, the Supreme Reality of the Vedanta philosophy.
In his commentary on the Brahma Sutras, the Sri-Bhasya, Ramanuja says:
Second, Brahma is one of the three gods making up the Hindu trinity, called the Trimurti, which can be collectively thought of as Brahman (Isvara).