Appointed by act of Convention:
1689-1692 Henry Bonner
Appointed by Secretary in Maryland:
1692-1694 Thomas Briscoe (transferred to Calvert County)
1694-1698 Christopher Vernon (resigned)
1698-1699 Christopher Gregory (died Aug. 18, 1699)
1699-1703 William Taylard (discharged)
1703 Evan Thomas
1703-1709 Thomas Bordley (resigned)
1709-1711 Robert Hall (transferred to Prince George's County)
1711-1734 John Beale (died April 1734)
1734-1765 John Brice II (resigned)
1765-1777 John Brice III
Appointed by County Court Justices (Constitution of 1776, sec. 47):
1777-1810 Nicholas Harwood
1810-1845 William S. Green
Appointed by Governor to 7-year term (Chapter 224, Acts of 1836, confirmed by Chapter 160, Acts of 1837):
1845-1851 Joseph H. Nicholson (W)
Elected by Voters to 6-year terms (Constitution of 1864, Art. IV, sec. 29):
1865-1866 Sprigg Harwood (D)
1866-1867 George E. Gambrill
Elected by Voters to 6-year terms (Constitution of 1867, Art. IV, sec. 25):
1867-1894 Sprigg Harwood (D) (died Dec. 17, 1894)
1894-1895 John C. Bannon (D)
1895-1918 George Wells
1918-1924 William N. Woodward
1924-1926 William Martin Brady (acting)
Elected by Voters to 4-year terms (Constitution of 1867, Art. XVII, added by Chapter 227, Acts of 1922, ratified Nov. 7, 1922):
1926-1927 William Martin Brady (acting)
1927-1933 Frank S. Revell (resigned)
1934-1938 Frank A. Munroe
1938-1954 John H. Hopkins III (D)
1954-1958 George T. Cromwell
Elected by Voters to 4-year terms (Constitution of 1867, Art. IV, sec. 25, amended by Chapter 99, Acts of 1956, ratified Nov. 6, 1956):
1958-1962 George T. Cromwell (died July 21, 1962)
1962 Elleanor G. Owings (acting)
1962-1966 Louis N. Phipps (D)
1966-1972 Marjorie S. Holt (R)
1972-1982 W. Garrett Larrimore
1982 Joseph F. Foster (acting)
1982-1986 E. Aubrey Collison (D)
1986-1990 H. Erle Schafer (D)
1990-1994 Mary McNally Rose (R)
1994-2018 Robert P. Duckworth (R)
2018- Scott A. Poyer (D)
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