infj...introvert.....called the Protector by some....not childhood protectors. The introversion coming from an abusive childhood is frequently the result of one's protecting oneself from abuse by being quiet. The Protector seeks to protect all, not a single person in a relationship. Their inner feelings they usually do not understand unless they have been given sight of these interpretations of personality types. They may feel better when helping someone, but do not feel the need to do so to be loved. Their intentions are genuine to help people in general, "asserting themselves often from the background not seeking glory", and it becomes their heart as a heart of genuine love. I do not know about childhood protectors. I honestly feel a unique relationship for a mature infj could be another infj, rather than looking for someone to "protect".