Nathaniel Gorham
Nathaniel Gorham was a politician and merchant from Massachusetts. He was a delegate from Massachusetts to the Continental Congress, and for six months served as the presiding officer of that body. He also attended the Constitutional Convention and was one of the signers of the United States Constitution on September 17, 1787, in Philadelphia, Pennsylvania.
Gorham was born in Charlestown, Boston, Massachusetts, and was the son of Captain Nathaniel Gorham and his fathers wife Mary Soley. His 3rd great grandfather was John Howland, who was one of the Pilgrims who traveled from England to North America on the Mayflower, signed the Mayflower Compact, and helped found the Plymouth Colony. His sister, Elizabeth Gorham, who married John Leighton, was the ancestor of Edith Kermit Carow Roosevelt the second wife of Theodore Roosevelt who served as First Lady of the United States during his presidency from 1901 to 1909.
Source: Wikipedia