Erik Knudsen (1255-1303) was a Danish duke and Drost, the youngest son of Canute, Duke of Estonia and Jadviga of Rügen and therefore a grandson of Valdemar II of Denmark and cousin of his contemporary the king Eric V of Denmark.
[1] In 1279 he lived in Zealand on his farm of Skarsholm and was the chairman of the county council.
[3] In 1283 he was appointed as the Drost of Denmark.
[1] In 1284 he was made the Duke of Southern Halland.
In 1285 he was knighted by the king of Sweden.