Beowulf became king of the Geats after King Hygelac was killed in battle, which occurred after Beowulf defeated Grendel and his mother.
Beowulf's uncle, Hygelac, was the king of the Geats in the beginning of Beowulf.
The main kings mentioned in Beowulf are Hrothgar, king of the Danes, and Beowulf, prince of the Geats who later becomes king. Other kings mentioned include Hygelac, Beowulf's uncle and king of the Geats, and Hrethel, Hygelac's father.
Beowulf gives him knowlegde
King Hroogar
The king of the Danes. He was the first liberator in the poem which foreshadows the hero in Beowulf.
In his farewell speech to Hrothgar, Beowulf promises to serve him and protect the kingdom of the Danes, as well as to always be there to help in times of need. Beowulf also vows to be a loyal ally and to maintain strong bonds between their two kingdoms.
He was king for 50 years.
Wiglaf becomes king after the death of Beowulf in the epic poem "Beowulf." He is depicted as a loyal and brave warrior who stood by Beowulf in his final battle against the dragon and is chosen by the Geats to succeed him as king.
The new King of the Geats after Beowulf's death is Wiglaf, who was Beowulf's loyal companion and supporter in his final battle against the dragon. Wiglaf is praised for his courage and loyalty in standing by Beowulf until the end.
The keen-souled kinsman of Hygelac in Beowulf is Beowulf himself. He is a Geatish warrior who comes to the aid of King Hrothgar of the Danes to defeat the monster Grendel and his mother. Beowulf later becomes the king of the Geats and dies fighting a dragon.
King Heremod - An evil king of legend. The scop, or bard, at Heorot discusses King Heremod as a figure who contrasts greatly with Beowulf.