...f Pennsylvania, A. D. 1818. Thus trained to the age of his majority he could not be other than a gentleman, in the highest sense of that much abused term. The son of General John Mason, Sr., of Claremont , the grandson of George Mason, of Gunston, the only rival of George Washington, and the author of the first Bill of Rights, properly conceived and expressed, ever penned for mankind, and sprung from ...