Lex Ursonensis

The Lex Ursonensis is the foundation charter of the Caesarean colonia Iulia Genetiva at Urso near Osuna (province of Seville, Andalusia) in southern Spain. A copy of its text was inscribed on bronze under the Flavians, portions of which were discovered in 1870/71. The original law spanned nine tablets with three or five columns of text each and comprised over 140 sections (rubricae). Of these four tablets survive, including sections 61-82, 91-106 and 123-134. Remains are kept in the National Archaeological Museum of Spain, in Madrid.

The charter was approved by the Roman assembly as a law proposed probably by Mark Antony after the assassination of Julius Caesar.