Olav Magnusson was king of Norway in 1103–1115. He was the son of King Magnus Barefoot and Sigrid, daughter of Saxe of Vik.
Olav became king together with his half-brothers Sigurd Jorsalfar and Øystein Magnusson when his father Magnus Barefoot... Wikipedia
Born: 1099
Died: December 22, 1115 (age 16 years), Nidaros
Parents: Magnus Barefoot and Sigrid Saxesdatter
Grandparents: Olaf III of Norway and Tora Arnesdatter