Cecilia Knudsdatter of Danmark (1081/85 – after 7 January 1131), was a Danish princess, daughter of Canute IV of Denmark and Adela of Flanders.
[1] At the deposition and murder of her father in 1086, her mother left Denmark and returned to Flanders with her son Charles, while Cecilia and her sister Ingegerd followed their paternal uncle Eric I of Denmark and aunt Boedil Thurgotsdatter, who became their foster parents, to Sweden.
[2][3] She later returned to Denmark, where her spouse was made jarl of Falster, and the couple settled at Haraldsted at Ringsted.
She also possibly had a daughter Inger Eriksdotter, who married Asser Rig, a magnate of the Hvide clan from Fjenneslev on Zealand, and was the mother of Esbern Snare and Absalon.
She suspected that he would be murdered and tried to convince him not to go to his meeting with Magnus, where he was to be killed, but he disregarded her advice.