Johannes Letzner

Johannes Letzner (29 November 1531 – 16 February 1613) was a Renaissance-era German Protestant priest and historian of Lower Saxony, in particular of Brunswick-Lüneburg.

Letzner studied briefly at Wittenberg University in 1550–1551 before moving to Uslar as cantor and school master, and later as vicar to Parensen (1553)  Langenholtensen (1564),  Lüthorst (1583), Iber (1589) and finally to  Strodthagen where he retired in 1610  and died three years later.

Letzner's works were widely perused in 18th-century historiography of Germany, but they are now considered highly unreliable. His magnum opus was going to be a "Great Chronicle of Brunswick-Lüneburg" ("Große Braunschweig-Lüneburg-Göttingensche Chronika") in eight volumes, on which he worked during 36 years of his life. This work was never printed in full, but the fifteen works Letzner published in print during his lifetime can be seen as portions of this work.

Conradus Fontanus is one of the purported sources used by Letzner, allegedly a medieval chronicler with a floruit close to 1200. Fontanus was included by Adelung in his continuation of Jöcher's Gelehrten-Lexicon, but in 20th century scholarship has come to be considered as of dubious historicity, or spurious. He is also the author of a Historia S. Bonifacii, a publication likewise criticized for fanciful inventions concerning local histories (he claims that at the Hülfensberg Saint Boniface destroyed the supposed Germanic god Stuffo), even for the invention of sources.