Kulm law
Kulm law, Culm law or Chełmno Law (German: Kulmer Recht; Latin: Jus Culmense vetus; Polish: Prawo chełmińskie) was a legal constitution for a municipal form of government used in several Central European cities in the Middle Ages and early modern period. It was initiated on 28 December 1233 in the Monastic State of the Teutonic Knights by Grand Master Hermann von Salza and Hermann Balk when the towns of Toruń (Thorn) and Chełmno (Kulm) received German town law, in particular as a modification of Magdeburg rights.