Magnus Jonsson of Orkney (1285-1321) was Earl of Orkneyar from 1312 to 1321, succeeding Jon Magnusson of Orkney and preceding Malise V of Strathearn.
Biography[]
Magnus Jonsson was born on Orkney in 1285, the son of Earl Jon Magnusson of Orkney. He succeeded his father as Earl of Orkneyar in 1312, and he backed King Robert Bruce during the Wars of Scottish Independence, signing the 1320 Declaration of Arbroath to support Scottish national sovereignty.