The North Carolina Constitution of 1789 limited the post of governor to three one-year terms within a span of six years; Williams sought re-election to the post in 1805, but was defeated by Nathaniel Alexander. In 1807, the General Assembly elected him governor once again, but this time he served only a single term of one year. Williams then retired from politics, except for a single term in the North Carolina Senate in 1809.
Biographical Directory of the Governors of the United States, 1789-1978, Robert Sobel and John Raimo, eds. Westport, CT: Meckler Books, 1978. (ISBN 0-930466-00-4)