a Norwegian historian, archaeologist and educator. Keyser was most commonly associated with the Theory on immigration to Norway. Keyser was a supporter of the migration theory that the Norse tribes had wandered into Norway from the north and east, a view also shared by Peter Andreas Munch, a former student of Keyser. This theory was inspired in part by the earlier works of Gerhard Schøning. The theory was commonly denounced by many Norwegian historians especially by Ludvig Kristensen Daa. Rudolf Keyser became a knight in the Order of St. Olav in 1847.
