The two Sigtrygg Runestones, designated as DR 2 and DR 4 in the Rundata catalog, are two of the Hedeby stones that were found in Schleswig-Holstein, Germany, which during the Viking Age was part of Denmark. The runestones were raised after the Danish king Sigtrygg Gnupasson by his mother Ásfriðr. Together with the account of Adam of Bremen, the two inscriptions constitute evidence for the House of Olaf on the Danish throne.[1]
The stones are dated as being carved after 934 C.E. as the historian Widukind of Corvey recorded that King Gnupa, who is mentioned in both inscriptions, was forced to pay a tribute to the German king in that year.[2]