Hengist and Horsa.  German, hengst (a stallion), and Horsa is connected with our Anglo-Saxon word hors (horse).  If the name of two brothers, probably they were given them from the devices borne on their arms.
    According to tradition, they landed in Pegwell Bay, Kent. (Dictionary of Phrase and Fable, Brewer, 1905)

    Vortigern and Hengist.  The account of the massacre of the Long-Knives, given by Geoffrey, in his British History, vi. 15, differs greatly from that of the Welsh Triads (see Stonehenge a Trophy, p. 1047).  Geoffrey says that Hengist came over with a large army, at which king Vortigern was alarmed.  To allay this suspicion, Hengist promised to send back all the men that the king did not require, and begged Vortigern to meet him in conference at Ambrius (Ambresbury), on May Day.  Hengist, in the mean time, secretly armed a number of his soldiers with "long knives," and told them to fall on the Britons during the conference, when he uttered the words, "Nemet oure Saxas."  This they did, and 460 "barons and consuls" fell.  It does not appear from this narrative that the slaughter was due "to the treachery of Vortigern," but was wholly the work of Hengist.  Geoffrey calls the earl of Gloucester "Eldol," and not "Eidiol." (The Reader's Handbook of Famous Names in Fiction, &c., Brewer, 1899)