Background
Karl Joachim Marquardt was born on April 19, 1812, at Danzig (Gdańsk).
Karl Joachim Marquardt was born on April 19, 1812, at Danzig (Gdańsk).
Marquardt studied at Berlin and Leipzig.
He held various educational appointments from 1833 onwards at Berlin, Danzig and Posen (Poznań), and became in 1859 head of the gymnasium in Gotha. The dedication of his treatise Historiae equitum romanorum libri quatuor (1841) to Lachmann led to his being recommended to the publisher of Wilhelm Adolf Becker's Handbuch der römischen Alterthumer to continue the work on the death of the author in 1846.
It took twenty years to complete, and met with such success that a new edition was soon called for. Finding himself unequal to the task single-handed, Marquardt left the preparation of the first three volumes (Römisches Staatsrecht) to Theodor Mommsen, while he himself contributed vols. V-VI (Römische Staatsverwaltung, 1873–1878) and vol. VII (Das Privatleben der Römer, 1879–1882).
Karl Joachim Marquardt died on November 30, 1882, in Gotha.