Ísleifssonnafnorð karlkyn · föðurnafnBeygingeintalafleirtalaán greinisán greinisnf.Ísleifssonnf.Ísleifssynirþf.Ísleifssonþf.Ísleifssyniþgf.Ísleifssyniþgf.Ísleifssonumef.Ísleifssonaref.Ísleifssona