Question

Which important member of the feudalism system am I?

I was hired to protect the kingdom. For my service in the standing army, I received a part of the kingdom's landholdings in an agreement known as subinfeudation.

Answer 1

Probably the knight because these were anyone skilled in fighting, knighted by the lord of the area. However knights weren't just nobles.

Answer 2

I believe it is a knight, since they fight (protect the kingdom), but also receive some landholdings.