The Declaration of Independence is a 'statement' adopted by the Continental Congress on July 4, 1776, which announced that the thirteen American colonies, then at war with Great Britain, regarded themselves as independent states and no longer a part of the British Empire.
According to the Welsh Society of Philadelphia, 16 of the signatories of the Declaration of Independence were of Welsh descent:
George Clymer, Stephen Hopkins, Robert Morris, William Floyd, Francis Hopkinson, John Morton, Button Gwinnett, Thomas Jefferson, John Penn, George Read, John Hewes, Francis Lewis, James Smith, Williams Hooper, Lewis Morris, and William Williams. This represents the largest ethnic group of signatories on the original document. Thomas Jeffersons' family originated from Snowdonia and were fluent Welsh speakers.