E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Hengist and Horsa.
German, hengst (a stallion), and Horsa is connected with our Anglo-Saxon word hors (horse). If the names of two brothers, probably they were given them from the devices borne on their arms.
1
According to tradition, they landed in Pegwell Bay, Kent.