Complex sentence: At this time Sölve was pillaging in the Baltic Sea and so he arrived in Lofond (probably the island of Lovön or the Lagunda Hundred), where Eysteinn was at a feast.
Split into simpler sentences: At this time Sölve was pillaging in the Baltic Sea. He arrived in Lofond (probably the island of Lovön or the Lagunda Hundred), where Eysteinn was at a feast.