Complex sentence: Two of Hálogi's jarls named Véseti and Vífil ("Vífill") abducted Hálogi's daughters and fled the country at which point Hálogi is out of the story.
Split into simpler sentences: Two of Hálogi's jarls named Véseti and Vífil ("Vífill") abducted Hálogi's daughters and fled the country. At that point Hálogi is out of the story.