Margaret Fredkulla was a Swedish princess who became successively queen of Norway and Denmark by marriage to kings Magnus III of Norway and Niels of Denmark. She was also de facto regent of Denmark. An English exonym is Margaret Colleen-of-Peace.

Magnus III Olafsson, better known as Magnus Barefoot, was the King of Norway from 1093 until his death in 1103. His reign was marked by aggressive military campaigns and conquest, particularly in the Norse-dominated parts of the British Isles, where he extended his rule to the Kingdom of the Isles and Dublin.