Claudius Clavus
Illustration — Geography by Ptolemy, Latin manuscript of the early 15th century, with maps by Claudius Clavus Claudius Clavus (Suartho) also known as Nicholas Niger, (Claudius Claussøn Swart), (born 14 September 1388), was a Danish geographer sometimes considered to be the first Nordic cartographer. He is commemorated by a plaque in the local Aagaarden. In 141213 at the age of 25 he started to travel around Europe and appeared eleven years later (142324) in Rome.
Claudius Clavus

Claudius Clavus · Nancy Municipal Library MS 354 · CC BY-SA 3.0
- Born
- 1388 · Funen.
- Died
- 1500
- Nationality
- Kingdom of Denmark
- Occupation
- geographer · cartographer
- Languages
- Danish
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Illustration — Geography by Ptolemy, Latin manuscript of the early 15th century, with maps by Claudius Clavus Claudius Clavus (Suartho) also known as Nicholas Niger, (Claudius Claussøn Swart), (born 14 September 1388), was a Danish geographer sometimes considered to be the first Nordic cartographer. He is commemorated by a plaque in the local Aagaarden. In 141213 at the age of 25 he started to travel around Europe and appeared eleven years later (142324) in Rome.
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wikidata · Q1098291 · wikipedia · Claudius Clavus
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Biography
Born at Funen in 1388, died in 1500.
The recorded working language is Danish.

An extra-Ptolemaic European regional map of Scandinavia
Ptolemy · Lithuanian Maps

View this map on the BL Georeferencer service. Image taken from:
The British Library · Image taken from page 743 of 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen. Historisk illustreret'
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reference work
- “Claudius Clavus”, English Wikipedia, consulted as further reading
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- Wikidata, structured authority record Q1098291: Claudius Clavus
General reference · Wikidata
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The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
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