This article examines two aspects of St. Knud, King of Denmark (1080–1086), in life and death. During his lifetime, it examines the evidence for the role possibly played by intra-dynastic strife in his downfall. After his death, it examines the early origins of his cult and his brother and successor Erik Ejegod's (1095–1103) connections to England, and argues that Erik visited Durham and Evesham personally, probably early in his reign, and took up the cause of promoting his brother's cult from early on. The possibilities of Erik's involvement before becoming king are examined.