Eysteinn Magnússon, son of Magnús berfœttr, Norw. king (r. 1103-22) -- Þham Magndr 5/4, Gísl Magnkv 20/3, Anon Nkt 44/6, 47/4
Saga: Msona (Ágr, Fsk, H-Hr, Hkr, Mork, Theodoricus).
Eysteinn was the eldest son of Magnús berfœttr (see Genealogy II.3 in ÍF 28). When his father died in 1103, he was elected king of Norway and ruled jointly with his half-brothers, Sigurðr and Óláfr (d. 1115). Eysteinn died of an illness on 29 August 1123. See Theodoricus (MHN 63-4; McDougall and McDougall 1998, 51-2), Ágr (ÍF 29, 47, 49; Ágr 1998, 70-1, 74-5), Mork (Mork 1928-32, 337-9, 352-88; Andersson and Gade 2000, 313-14, 326-50), Fsk (ÍF 29, 315, 320; Finlay 2004, 252-3, 257), Hkr (ÍF 28, 238, 254-63; Hollander 1991, 688, 699-705), H-Hr (Fms 7, 74-6, 100-47, 155-6). See also Sjórs Lv 3, GullásÞ Lv, Anon Nkt 45, 47-8.