Who was Gouverneur Morris?

I am 7nth generation removed from Robert Morris' brother Richard. From what I have studied about my family heritage, during the earliest stages of the building of our country, leadership was in short supply and was welcomed when offered. I do not believe we are related by blood, or by marriage. It is my belief that Gov. Morris volunteered his assistance in the polity, and that he may also be related to Lewis. Gov. Morris was appointed as a leader in Pennsylvania, and his signature is believed to be on the Constitution, however, his signature does not reside on the Declaration of Independence. Up until the U.S. courts desisions against minority discrimination in the 70's, Founding Fathers were identified by their signature on the Declaration, not the Constitution. I still identify them as such. There-fore; Gov. Morris is not a Founding Father.