Eric I of Denmark was a king who ruled from 1095 to 1103. He was a member of the House of Knýtlinga, a royal family that descended from the famous Viking king Canute the Great. Eric's reign was marked by efforts to strengthen the Christian faith in Denmark and to consolidate his power. During his rule, Eric I faced challenges from rival factions and external threats. He is known for his military campaigns, which aimed to expand Danish territory. His reign ended when he was killed in battle, leading to a period of instability in the region.