Magnus Ericson, king of Sweden (b. 1316)
Magnus IV (April or May 1316 – 1 December 1374; Swedish Magnus Eriksson) was King of Sweden from 1319 to 1364, King of Norway as Magnus VII (including Iceland and Greenland) from 1319 to 1355, and ruler of Scania from 1332 to 1360. By adversaries he has been called Magnus Smek (English: Magnus the Caresser).

Referring to Magnus Eriksson as Magnus II is incorrect. The Swedish Royal Court lists three Swedish kings before him of the same name. A few authors do not count Magnus Nilsson as a Swedish king (though the Royal Court does) and have thus called this king Magnus III. He is the second longest-reigning monarch in Swedish history, only surpassed by the current king Carl XVI Gustaf.