Frederic R. DeYoung

Frederic R. DeYoung
Justice of the Supreme Court of Illinois
In office 1924 – November 16, 1934
Succeeded by	Francis S. Wilson[1]
Constituency	7th district
Justice of the Superior Court of Cook County
In office 1923–1924
Justice of the Circuit Court of Cook County
In office 1921
Appointed by	Frank Lowden
Member of the Illinois House of Representatives
In office 1915–1919 Serving with J. J. O'Rourke (1915–1917) Louis J. Pierson (1915–1917) Albert F. Volz (1917–1919) John Webster McCarthy (1917–1919)
Preceded by	John M. Curran and Frederick B. Roos
Succeeded by	Howard P. Castle
Constituency	7th district
Harvey City Attorney
In office 1908–1919
Personal details
Born	(1875-09-12)September 12, 1875 Chicago, Illinois
Died	November 16, 1934(1934-11-16) (aged 59) Chicago, Illinois
Political party	Republican
Other political affiliations	Democratic
Education	University of Chicago Valparaiso University Northwestern University School of Law
Occupation	Jurist, politician

Frederic R. DeYoung (September 12, 1875 – November 16, 1934) was an American jurist and politician who served as a judge on the Supreme Court of Illinois (1924–1934), judge on the Superior Court of Cook County (1923–1924), judge on the original Circuit Court of Cook County (1921), member of the Illinois House of Representatives (1915–1919), and the city attorney of Harvey, Illinois (1908–1919), among other public offices. DeYoung ran as a Republican for most of his political career. However, in his last campaign (his 1933 reelection to the Supreme Court of Illinois), he ran instead as a Democrat.

While serving on the Supreme Court of Illinois, DeYoung authored more than 440 opinions. Among the more notable opinions which DeYoung authored was the opinion he authored for the City of Aurora v. Burns case which supported the constitutionally of zoning. This opinion was quoted at length in the opinion for the landmark United States Supreme Court decision Village of Euclid v. Ambler Realty Co., which upheld the national constitutionally of land use zoning.