 John B. McClelland was a member of the commission for the Pennsylvania Constitution of 1776, and later represented Westmoreland County in the Pennsylvania General Assembly.The Convention met in Philadelphia, July 15, 1776, to form a constitution and frame a government for the state of Pennsylvania.A committee of prominent citizens met at Carpenter's Hall, Philadelphia, on June 15, 1776, in order to make arrangements for a convention anticipating the separation of the colonies from Great Britain.