Question: How many professions were held by the Washington & Jefferson College alumnus whose notability is led by Chief Justice Marla Luckert ?

text: List of Washington & Jefferson College alumni
Law and government -- State Governors
Milton Latham Henry A . Wise
Washington & Jefferson College is a private liberal arts college in Washington, Pennsylvania, which is located in the Pittsburgh metropolitan area. The college traces its origin to three log cabin colleges in Washington County, Pennsylvania established by three frontier clergymen in the 1780s: John McMillan, Thaddeus Dod, and Joseph Smith. These early schools eventually grew into two competing colleges, with Jefferson College in Canonsburg, Pennsylvania being chartered in 1802 and Washington College being chartered in 1806. These two schools merged in 1865 to form Washington & Jefferson College. As of 2009, Washington & Jefferson College had about 12,000 living alumni. Before the union of the two colleges, Washington College graduated 872 men and Jefferson College graduated 1,936 men. The alumni association recognizes as alumni all students who have completed at least one college year as full-time students. These alumni include James G. Blaine, who served in Congress as Speaker of the House, U.S. Senator from Maine, two-time United States Secretary of State and the Republican nominee for the 1884 presidential election. Other graduates have held high federal positions, including United States Secretary of the Treasury Benjamin Bristow and United States Attorney General Henry Stanbery, who successfully defended Andrew Johnson during his impeachment trial. As a U.S. Congressman, Clarence Long was a key figure in directing funds to Operation Cyclone, the CIA's effort to arm the mujahideen in the Soviet-Afghan War.
Alumni Class year Notability
Thomas W. Bartley Jefferson 1829 Governor of Ohio ( 1844 ) ; Ohio State Senator ( 1841-1845 ) , serving as Speaker of the Senate in 1843
James Addams Beaver Jefferson 1856 Governor of Pennsylvania ( 1887-1891 ) ; Acting President of Penn State University ( 1906-1908 ) , where he is the namesake of Beaver Stadium ; Judge of the Pennsylvania Superior Court
George Addison Crawford Jefferson 1847 Elected Governor of Kansas in 1861 , but the Kansas Supreme Court overturned the results
John W. Geary Jefferson 1839 Governor of Pennsylvania ( 1867-1873 ) ; Territorial Governor of Kansas ( 1856-1857 ) ; First Mayor of San Francisco ( 1850-1851 ) ; Union Major general during the American Civil War
William Thomas Hamilton Jefferson 1840 Governor of Maryland ( 1880-1884 ) ; U.S . Senator from Maryland ( 1869-1875 ) ; U.S . Congressman from Maryland ( 1849-1855 )
William Hendricks Jefferson 1810 Governor of Indiana ( 1822-1825 ) ; U.S . Senator from Indiana ( 1825-1837 ) ; Indiana Territorial Legislature ( 1813-1814 ) , serving as Speaker in 1814 ; Secretary of the first Indiana Constitutional Convention in 1816 ; U.S . Congressman from Indiana ( 1816-1822 )
John S. Horner Washington 1819 Governor of Michigan Territory ( 1835-1836 ) ; Secretary of Wisconsin Territory ( 1836-1837 )
Milton Latham Jefferson 1845 Governor of California ( 1859-1860 ) ; U.S . Senator from California ( 1860-1863 )
Isaac Murphy Washington ? Reconstruction-era Governor of Arkansas ( 1864-1868 ) ; served in the Arkansas House of Representatives , the Arkansas Senate , and the 1861 Arkansas State Convention , where he cast the lone vote against secession
Israel Pickens Jefferson 1802 Governor of Alabama ( 1821-1825 ) ; U.S . Senator from Alabama ( 1826 ) ; U.S . Congressman from North Carolina ( 1811-1817 )
Leonidas Sexton Jefferson 1847 Lieutenant Governor of Indiana ( 1873-1877 ) ; U.S . Congressman from Indiana ( 1877-1879 )
Meldrim Thomson , Jr ? Governor of New Hampshire ( 1973-1979 )
Henry A . Wise Washington 1825 Governor of Virginia ( 1856-1860 ) ; U.S . Congressman from Virginia ( 1833-1844 ) ; United States Ambassador to Brazil ( 1844-1847 ) ; Confederate Brigadier General during the American Civil War