Sometimes he is known as "Private Landlord" Ragnar, due to his propensity to give out fiefs along with the political winds, rather than the efforts of the conquerors.
Ragnar is a common Nordic name in the countries of Sweden, Denmark, and Norway. He may be specifically named after Ragnar Lothbrok, a semi-legendary Viking king who lived around the 8th and 9th century.
His army size grows over time. Left unchecked, he can amass a warband of over 400 troops, by far the largest single army in the game.