St. Botvid of Botkyrka in Sweden was a regional martyr saint who died in ca. 1120 and quickly became subject for a cult observed in all Swedish medieval dioceses. In the 13th century, an Office was compiled which until now has remained unedited. The Office is preserved as fragments in the National Archives in Stockholm, Sweden. Chants for first and second Vespers, Matins and Lauds are preserved but the little hours seem not to have been included in the Office. This presentation contextualises Botvid and his legend within other martyr saints of medieval Scandinavia and discusses the chants in the Office of which most seem to be unique pieces.