What does Eric mean?
From Old Norse 'Eirikr', usually read as 'ei' ('ever, always') + 'rikr' ('ruler'), giving 'ever-ruler' or 'sole ruler'. Note: 'ruler/powerful', not literally 'king' — the second element is the Germanic 'ric' (ruler/power).
What does Magnus mean?
Magnus comes from the Latin for “great,” long popular across Scandinavia.