Valdemar II of Denmark, also known as Valdemar the Victorious, was a king who ruled from 1202 to 1241. He was born around 1170 and was a member of the House of Knýtlinga. Valdemar is known for his military campaigns, which expanded Danish territory and strengthened the kingdom's influence in the Baltic region. During his reign, Valdemar II faced various challenges, including conflicts with neighboring countries and internal strife. He was captured during a battle in 1223 but later regained his throne. Valdemar's legacy includes efforts to consolidate royal power and promote trade, contributing to the development of medieval Denmark.