Olaf I, nicknamed Olaf Hunger, was king of Denmark from 1086 to 1095, following the death of his brother Canute IV the Holy. He was a son of king Sweyn II Estridsson, and the third of Sweyn's sons to rule. He married Ingegard, the daughter of Harald Hardråde, but did not have any sons. He was succeeded by his brother Eric the Good.

Canute IV, later known as Canute the Holy or Saint Canute, was King of Denmark from 1080 until 1086. Canute was an ambitious king who sought to strengthen the Danish monarchy, devotedly supported the Roman Catholic Church, and had designs on the English throne. Slain by rebels in 1086, he was the first Danish king to be canonized. He was recognized by the Roman Catholic Church as patron saint of Denmark in 1101.