19th-century German historians

Julius Ludwig Friedrich Weizsäcker (13 February 1828 in Öhringen – 3 September 1889 in Bad Kissingen) was a German historian. He specialized in medieval history and early modern history. A member of the distinguished Weizsäcker family, his brother was the Protestant theologian Karl Heinrich Weizsäcker.
He studied theology and history at the University of Tübingen, obtaining his habilitation in 1859. He was successively a professor of history at the universities of Erlangen (from 1863), Tübingen (from 1867), Strasbourg (from 1872), Göttingen (from 1876) and Berlin (from 1881).

Hermann Dessau (6 April 1856, Frankfurt am Main – 12 April 1931, Berlin) was a German ancient historian and epigrapher. He is noted for a key work of textual criticism published in 1889 on the Historia Augusta, which uncovered reasons to believe that this surviving text of ancient Roman imperial history had been written under circumstances very different from those previously believed.
He studied at the University of Berlin as a pupil of Theodor Mommsen, receiving his doctorate in 1877 from the University of Strasbourg. On behalf of the Corpus Inscriptionum Latinarum (CIL) he travelled to Italy and North Africa. In 1884 he was habilitated as a historian in Berlin, where he subsequently became an associate honorary professor (1912) and full honorary professor (1917). From 1900 to 1922 he served as a scientific officer for the Prussian Academy of Sciences.

Onno Klopp (9 October 1822 in Leer, Kingdom of Hanover – 9 August 1903 in Penzing, Austria) was a German historian, best known as the author of Der Fall des Hauses Stuart (The Fall of the House of Stuart), the fullest existing account of the later Stuarts. He is also known as one of the few German historians who denigrated Frederick the Great.

Felix Ludwig Julius Dahn (9 February 1834 – 3 January 1912) was a German law professor and nationalist author, poet and historian.

Paul Gerhard Natorp (24 January 1854 – 17 August 1924) was a German philosopher and educationalist, considered one of the co-founders of the Marburg school of neo-Kantianism. He was known as an authority on Plato.

Ludwig Pastor, later Ludwig von Pastor, Freiherr von Campersfelden (31 January 1854 – 30 September 1928), was a German historian and a diplomat for Austria. He became one of the most important Roman Catholic historians of his time and is most notable for his History of the Popes. He was raised to the nobility by the Emperor Franz Joseph I in 1908. He was nominated for the Nobel Prize in Literature six times.

Eduard Gottlob Zeller (German: [ˈtsɛlɐ]; 22 January 1814, Kleinbottwar – 19 March 1908, Stuttgart) was a German philosopher and Protestant theologian of the Tübingen School of theology. He was well known for his writings on Ancient Greek philosophy, especially Pre-Socratic Philosophy, and most of all for his celebrated, multi-volume historical treatise The Philosophy of Greeks in their Historical Development (1844–52). Zeller was also a central figure in the revival of neo-Kantianism.

Marie Cathérine Sophie, Comtesse d'Agoult (born de Flavigny; 31 December 1805 – 5 March 1876), was a French romantic author and historian, known also by her pen name, Daniel Stern.