Usually a mercenary
or, one cast off
from a group of knights attached to a lord
. These knights were very much a wildcard
in medieval times they could be angels
, depending on their current state
. A knight errant may have been welcomed
by a lord in need of more knights because he was in a dispute
than his neighbours, or about to enter into a war
... or rejected
down because the lord was strong
and saw a free knight on his land as a threat to his own authority
Oftentimes the Knights pretended sympathy with the villagers to gain trouble-free room board, and possibly village girl, only as a means of attracting the attention of the lord and offering services to him. Of course the villagers never saw this because as soon as he was hired by the lord, his armour and horse would be changed and he would become just another knight keeping them in line, else he would betray the lord and start again in another village where he wasn't known.
Sad but true.