According to the biography, The Great Little Madison, did Madison support the Bill of Rights?

Fritz states that at first Madison did not support the Bill of Rights, and with others said that the Constitution would allow itself to be amended to include a bill of rights.

Later, he became an advocate of the Bill of Rights. He campaigned through his home state of Virginia, debating opponents and arguing in particular for freedom of religion. He wanted the amendment protecting religious freedom to be worded more broadly, to be more explicit in the limits it placed on government than the one that eventually made its way into the Constitution.