Khalil El-Amin
Khalil Hassan El- Amin( born December 22, 1985) is a former American football offensive lineman and defensive lineman.
B. J. Cohen
B. J. Cohen( born June 10, 1975) is a former American football offensive lineman and defensive lineman in the Arena Football League( AFL).
Trevor Pryce
Trevor Wesley Pryce II( born August 3, 1975) is a former American football defensive lineman and author who played fourteen seasons in the National Football League( NFL).
Pryce played college football for the University of Michigan before transferring to Clemson University.
He was selected by the Denver Broncos in the first round of the 1997 NFL Draft.
Joe Bock (American football)
Joseph Alan" Joe" Bock( born July 21, 1959 in Rochester, New York, USA) is a former American professional football player.
He attended East Rochester High School and played college football at the University of Virginia from 1977 to 1981.
He was a defensive lineman and long snapper.
His nickname is William.
William Cowger
William Owen Cowger( January 1, 1922 – October 2, 1971), a Republican, served as mayor of Louisville, Kentucky, and as a member of the United States House of Representatives.
Cowger was born in Hastings, Nebraska.
He moved to Louisville, Kentucky to study political science at the University of Louisville.
After other graduate work and military service in World War II, he returned to Louisville and became president of a mortgage loan company.
In 1961, Cowger was elected mayor of Louisville for a single four- year term.
( State law at the time did not allow him to seek re-election.)
Cowger was then elected to the United States House of Representatives in 1966 and served in the House of Representatives from January 3, 1967 to January 3, 1971.
Cowger unsuccessfully sought re-election in 1970 while dealing with a fatal illness, but was defeated by Democrat Romano L. Mazzoli.
After his defeat, Cowger returned to his mortgage business in Louisville and died less than one year after.
He is buried in Cave Hill Cemetery in Louisville.
David Beard (Canadian football)
David Beard( born February 23, 1993) is a Canadian football offensive lineman for the Edmonton Eskimos of the Canadian Football League( CFL).
He previously attended the University of Alberta where he played college football as an offensive and defensive lineman and studied kinesiology.
C. J. Mosley (defensive lineman)
Calvin Michael Mosley, Jr.( born August 6, 1983) is a former American football defensive tackle.
He was drafted by the Minnesota Vikings in the sixth round of the 2005 NFL Draft.
He played college football at Missouri.
He has also played for the Cleveland Browns, New York Jets, Jacksonville Jaguars, Detroit Lions and Miami Dolphins.
Gerry Perry
Gerry Perry( born July 17, 1930) was a defensive lineman and placekicker in the National Football League.
Ronald Jones (gridiron football)
Ronald Jones( born September 17, 1981) is a former gridiron football offensive lineman and defensive lineman.
He was signed as an undrafted free agent by the San Francisco 49ers in 2004.
He played college football at Southern Miss.
Jones was also a member of the Indianapolis Colts, Nashville Kats, San Jose SaberCats and Toronto Argonauts.
Reggie Singletary
Reggie Leslie Singletary( born January 17, 1964) is a former professional American football player who played defensive lineman and offensive lineman for five seasons for the Philadelphia Eagles of the National Football League.

Question: Are C. J. Mosley (Defensive Lineman) and William Cowger from the same country?
Answer: yes