Isaac S. Pennybacker
|Isaac Samuels Pennybacker|
|United States Senator
December 3, 1845 – January 12, 1847
|Preceded by||William C. Rives|
|Succeeded by||James M. Mason|
September 3, 1805|
New Market, Virginia
|Died||January 12, 1847
Early life and education 
He attended Washington College (now Washington and Lee University) and the Winchester Law School, run by Henry St. George Tucker, Sr.. He was then in private practice in Harrisonburg, Virginia until 1837.
Political and judicial career 
He was offered by President Martin Van Buren the office of Attorney General, but declined. Similarly, he declined a position as justice of the Supreme Court of Virginia, and would not accept the nomination of the Democratic party for Governor of Virginia.
On April 23, 1839, Pennybacker received a recess appointment from Van Buren to a seat on the United States District Court for the Western District of Virginia the death of Alexander Caldwell. Formally nominated on January 29, 1840, Pennybacker was confirmed by the United States Senate on February 17, 1840, and received his commission the same day.
He resigned from his judgeship on December 6, 1845, and then served as United States Senator from Virginia from 1845-1847. James K. Polk named Pennybacker to the very first Board of Regents of the Smithsonian Institution, a group which included Vice-President George M. Dallas, Chief Justice Roger B. Taney, D.C. Mayor William W. Seaton, Senator Sidney Breese, Rep. William J. Hough, Rep. Robert Dale Owen, Rep. Henry W. Hilliard, Rufus Choate, Richard Rush, Dr. Benjamin Rush, William C. Preston, Alexander Dallas Bache, and Joseph G. Totten, among others, who met for the first time in September 1846.
As judge, Pennybacker was succeeded by John White Brockenbrough. As Senator, he succeeded William Cabell Rives, whose brother Alexander Rives later served like Pennybacker as judge of the United States District Court for the Western District of Virginia. Pennybacker died at the age of 41 in Washington, D.C.. His Senate seat was filled by James Murray Mason.
Notes and references 
- "Some Reflections on the Board of Regents' First Meeting, on September 7, 1846". Center for Museum Studies, Smithsonian Institution. Retrieved October 2, 2007.
- biographic sketch at U.S. Congress website
- Isaac S. Pennybacker at the Biographical Directory of Federal Judges, a public domain publication of the Federal Judicial Center.
- Hon. Armistead M. Dobie, "Federal District Judges in Virginia before the Civil War," 12 F.R.D. 451 (1951,1952) (viewed on Westlaw)
|United States House of Representatives|
James M. H. Beale
|Member of the U.S. House of Representatives
from Virginia's 16th congressional district
March 4, 1837 - March 4, 1839
Green B. Samules
|United States Senate|
William C. Rives
|United States Senator (Class 1) from Virginia
December 3, 1845 - January 12, 1847
Served alongside: William S. Archer
James M. Mason