missing top of tree

I am missing the very top left corner of my family tree..I can make out ....AARFAGRE 93_ Dod, ca. 933.
3) Olav (,,Geirstad-Alv") 5) Sigurd Rise, 2) Alof Aarbod, 3) Bjorn Farmand,
konge i Vigen, blev draept av Konge over Hadafylke ca. 900. g.m. Thorer den Tause Morejarl. Konge i Vestfold, draept ved Tonsberg
Erik Blodox ved Tonsberg 934. av Erik Blodoxe 927.

Any ideas who is father? says anchild, 5...I am guessing it means 1father+4 childern?