Henchman. Henchboy The Anglo-Saxon hinc is a servant or page; or perhaps henges-man, a
horse-man; henges or hengst, a horse.

I posted elsewhere about "henchman" but this is the first time I have found confirmation of
my theory that it began with the trusted armed retainer who led a knight's horse by its
bridal in crowded streets, so the knight could have both hands free to protect against an
assassination attempt.