U.S. House of Representatives Pennybacker was elected as a
Democrat from
Virginia's 16th congressional district to the
United States House of Representatives of the
25th United States Congress, serving from March 4, 1837, to March 3, 1839. He declined the office of
United States Attorney General offered him by President Martin Van Buren and that of Justice of the
Supreme Court of Virginia.
Federal judicial service Pennybacker received a
recess appointment from President
Martin Van Buren on April 23, 1839, to a seat on the
United States District Court for the Western District of Virginia vacated by Judge
Alexander Caldwell. He was nominated to the same position by President Van Buren on January 23, 1840. He was confirmed by the
United States Senate on February 17, 1840, and received his commission the same day. His service terminated on December 6, 1845, due to his resignation.
U.S. Senate Pennybacker was elected as a Democrat to the
United States Senate to fill the vacancy in the term beginning March 4, 1845, caused by the failure of the
Virginia General Assembly to elect, and served from December 3, 1845, until his death. He was Chairman of the Committee on Claims for the
29th United States Congress. ==Other service==