Dictionary of Medieval Names
from European Sources

Magnus m. Latin magnus 'large, great, powerful'.

The name of a 2nd C saint, a 3rd C saint, a 6th C saint, a 7th C French saint, a 7th or 8th C German saint, an three 11th C kings of Norway, an 11th C king of Denmark, two 12th C kings of Norway, two 12th C kings of Sweden, a 13th C king of Norway, a 13th C king of Sweden, a 14th C king of Norway and Sweden, and a 16th C king of Livonia.

Estonia
Middle Low German
1419 Maugnus BbRT p. 348; 1592 Magnus Tiik1977 p. 287
Finland
Early Modern Swedish
1548 Mongs (gen) Audén1980 p. 168
Germany
Latin
1259 Magnus (nom) CDL-1.1.1 XXXI
Iceland
Middle Icelandic
1500 magnus (nom) DipIs-7 489
Italy
Latin
1285 Mainecti (gen) Perugia1285 p. 154
Sweden
Latin
1350 Magni (gen) SDHK no. 6055, Magno (dat) ibid. no. 6060, Magnus (nom) ibid. no. 6005; 1351 Magnus (nom) ibid. no. 6012; 1411 Magni (gen) ibid. no. 17654
Old Swedish
1358 Magnus (gen) SDHK no. 7337; 1383 Magnos SRA-vol2 no. 1936, Magnossa (gen) ibid. no. 1936, Magnus ibid. no. 1902, Magnussa (gen) ibid. no. 1910; 1409 Magnus (gen) SDHK no. 17268, Magnussa (gen) ibid. no. 17268; 1416 Magnus (nom) ibid. no. 18817, Magnussa (gen) ibid. no. 18817, Magnusse (dat) ibid. no. 18817
Early Modern Swedish
1543 Mågs (gen) Audén1980 p. 164, Mågz (nom) ibid. p. 164
Cite as: R. Le Get, S.L. Uckelman. "Magnus". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Magnus.