Sweyn Forkbeard (Old Norse: Sveinn Haraldsson tjúguskegg [ˈswɛinː ˈhɑrˌɑldsˌson ˈtjuːɣoˌskeɡː]; Danish: Svend Tveskæg; 17 April 963 – 3 February 1014) was King of Denmark from 986 until his death, King of England for five weeks from December 1013 until his death, and King of Norway from 999/1000 until 1014. He was the father of King Harald II of Denmark, King Cnut the Great, and Queen Estrid Svendsdatter. In the mid-980s, Sweyn revolted against his father, Harald Bluetooth, and seized the throne. Harald was driven into exile and died shortly afterwards in November 986 or 987.
https://en.wikipedia.org/wiki/Sweyn_Forkbeard
Sweyn Forkbeard (Old Norse: Sveinn Haraldsson tjúguskegg [ˈswɛinː ˈhɑrˌɑldsˌson ˈtjuːɣoˌskeɡː]; Danish: Svend Tveskæg; 17 April 963 – 3 February 1014) was King of Denmark from 986 until his death, King of England for five weeks from December 1013 until his death, and King of Norway from 999/1000 until 1014. He was the father of King Harald II of Denmark, King Cnut the Great, and Queen Estrid Svendsdatter. In the mid-980s, Sweyn revolted against his father, Harald Bluetooth, and seized the throne. Harald was driven into exile and died shortly afterwards in November 986 or 987.
