Court records from medieval France show that in the years 1300 to 1400 the number of people arrested in the French realm for violent interpersonal crimes (not committed in wars) increased by 30 percent over the number of people arrested for such crimes in the years 1200 to 1300
If the increase was not the result of false arrests, ttherefore, medieval France had a higher level of documented interpersonal violence in the years 1300 to 1400 than in the years 1200 to 1300
The population of medieval France increased substantially during the first five decades of the 1300s, until the deadly bubonic plague decimated the population of France after 1348.