Eð war uorum fafares fafar so byggd dǫ dar tjyälbuðe;.
it be.PRET.SG our.M.DAT.SG . father’s_father-POSS father’s_father who build.PRET that.F.SG.ACC there shelter.DEFF.ACC.SG
It was our great-great-great-grandfather who built that shelter.