Wikipedia
Ongentheow
Ongentheow (Old English: Ongenþeow, Ongenþio, Ongendþeow; Swedish: Angantyr) (died ca. 515) was the name of a semi-legendary Swedish king of the house of Scylfings, who appears in Old English sources.
He is generally identified with the Swedish king Egil Vendelcrow mentioned in Ynglingatal, Historia Norwegiae and in Ynglinga saga. The reason why they are thought to have been the same is that they have the same position in the line of Swedish kings and are described as the fathers of Ohthere and grandfathers of Eadgils.
The name Ongentheow contains as its second element þeōw "servant, slave". The first appears to be ongēan "against, opposite".