Humblus I Dan I Humblus II Lotherus Scioldus Scioldus Gram Swibdagerus Guthormus Hadingus Frotho I Haldanus, Roe, Scatus Roe, Helgo Roluo Krage Hiartwarus Hotherus Balderus Roricus Vigletus Wermundus Uffo Dan II Hugletus Frotho II Dan III Fridleus I Fridleifus I[165] Frotho III[166] Frotho I[166] Herleifus Havardus Leifus Herleifus[167] Hunleifus[167] Aleifus[167] Oddleifus[167] Geirleifus[167] Gunnleifus[167] Frotho II Vermundus Dan I Dan II[168] Hiarnus[169] Frotho III Fridleus II[170] Fridleifus II Frotho IV Frotho IV Ingellus Ingjaldus, Halfdanus Olauus[171] Frotho V, Haraldus[172] Agnerus, Roericus, Roas or Roe, Helgo Haraldus,[173] Haldanus,[174] Frotho (V)[175] Rolpho Krag A comparison of the two lines of kings shows that, beginning with the first Fridleus in Saxo's account and the first Fridleifus in the _Skjọldungasaga's_ account, there are important correspondences. Fridleus I (Saxo) = Fridleifus I (_Skjs._). Frotho III, son of Fridleus I (Saxo) = Frotho I, son of Fridleifus I (_Skjs._). Fridleus II, son of Frotho III (Saxo) = Fridleifus II, son of Frotho III (_Skjs._). Frotho IV (Saxo) = Frotho IV (_Skjs._); and in both sources Frotho IV is the Danish king in whose career Swerting plays such a prominent part. By omitting all of Saxo's kings between Scioldus and Fridleifus I, among whom are also the Hroar-Helgi group, the _Skjọldungasaga_ has avoided the difficulty of having to deal with Hroar, Helgi, and Hrolf Kraki where they first occur in Saxo's history.