Sifredi
Bishop-lists of Skara = Chronicon Vetus Episcoporum Scarensium and Chronicum Rhythmicum Episcoporum Scarensium auctore Brynolpho . . . Episcopo Scarensi in Scriptores Rerum Suecicarum Medii Aevi, vol. III, part ii, pp. 112–120; for English translations of the earliest entries in these lists by Bishop Lars-Göran Lonnermark, see Fairweather 2014, pp. 210–11; 283; 286; 301.