Zoltán Hetényi
Zoltán Laszolo Hetényi( born 18 February 1988 in Budapest) is a Hungarian ice hockey goaltender who plays for Debreceni EAC in the Erste Liga.
Joe Leonard
Joe Leonard( August 4, 1932 San Diego, California – April 27, 2017 San Jose, California) was an American professional motorcycle racer and racecar driver.
Steve Filipowicz
Stephen Charles" Flip" Filipowicz( June 28, 1921 – February 21, 1975) was a professional American football and baseball player.
Filipowicz and Olympic great Jim Thorpe share the distinction of being the only two men to have played for the New York Giants of both baseball and football.
Joe Leonard (baseball)
Joseph Howard Leonard( November 15, 1894 – May 1, 1920) was an American Major League Baseball player, born in Chicago on November 15, 1894.
He died in Washington, D.C. on May 1, 1920.
Leonard played in parts of five seasons( 1914, 1916 – 1920) with the Pittsburgh Pirates, Cleveland Indians, and Washington Senators.
He recorded 179 hits over 791 at- bats in 269 games during his career.
Defensively, Leonard was primarily a third baseman.
In 1918 Leonard's career was interrupted while he served in World War I.
Sam J. McAllister
Samuel J. McAllister (1903 – November 5, 1975) was an American college basketball, baseball and football coach.
John Perrin
John Stephenson "Jack" Perrin (February 4, 1898 – June 24, 1969) was an American baseball and football player.
He played college baseball and football for the University of Michigan.
He later played Major League Baseball for the Boston Red Sox in and professional football for the Hartford Blues of the National Football League in 1926.
Ferenc Zoltán Molnár
Ferenc" Frankie" Zoltán Molnár
( February 14, 1943 – May 20, 1967) was a United States Army soldier of Hungarian descent and a recipient of the United States military's highest decoration— the Medal of Honor—for his actions in the Vietnam War. Frankie and Zoli is a nickname of Ferenc and Zoltán.
Clement J. McNaspy
Clement James McNaspy( April 20, 1882 – December 15, 1933) was an American football, baseball, and basketball coach and college athletics administrator.
He served as the head football, baseball, and basketball coach and athletic director at Southwestern Louisiana Institute, now known as University of Louisiana at Lafayette.
Earl Potteiger
William Earl Potteiger( February 11, 1893 – April 7, 1959) was an American football, baseball, and basketball player and coach.
He played professionally in both baseball and football and coached professionally in basketball, baseball and football.
Potteiger was player- coach for the New York Giants when they won their first National Football League championship in 1927.
He also played minor league baseball from 1913 to 1917, in 1919, and from 1926 to 1927.
He managed in the minors from 1926 to 1927 and in 1932.
Red Wilson
Robert James" Red" Wilson( March 7, 1929 – August 8, 2014) was a professional baseball and college baseball and football player.
He played 10 seasons in Major League Baseball for the Chicago White Sox( 1951 – 1954), Detroit Tigers( 1954 – 1960), and Cleveland Indians( 1960), primarily as a catcher.

Question: Do Joe Leonard (Baseball) and Zoltán Hetényi share the same nationality?
Answer: no