Karl Dietrich Bracher
Karl Dietrich Bracher (13 March 1922 – 19 September 2016) was a German political scientist and historian of the Weimar Republic and Nazi Germany. Born in Stuttgart, Bracher was awarded a Ph.D. in the classics by the University of Tübingen in 1948 and subsequently studied at Harvard University from 1949 to 1950. During World War II, he served in the Wehrmacht and was captured by the Americans while serving in Tunisia in 1943. He was then held as a POW in Camp Concordia, Kansas. Bracher taught at the Free University of Berlin from 1950 to 1958 and at the University of Bonn since 1959. In 1951 Bracher married Dorothee Schleicher, the niece of Dietrich Bonhoeffer. They had two children.
Karl Fritsch
Karl Fritsch (24 February 1864 – 17 January 1934) was an Austrian botanist. He was born in Vienna and educated mainly at the University of Vienna, obtaining his PhD degree in 1886 and his Habilitation in 1890. In 1900 he moved to the University of Graz as professor of Systematic Botany, where he built up the botanical institute. In 1910 he was appointed as director of the university's botanical garden, and in 1916 the new institute acquired its own building. He continued at Graz for the rest of his career, and died there.