Somewhere after Pern and the Deryni and Thomas Covenant...DW.
I think you are confusing Title and Rank.
Title is like Vance's brother been Baron Harkon.
Rank is a lot more complicated and has to do with being heir or younger son. Still Jareth is a noble and is most certainly entitled to a Courtesy title.
so do i add the xp to my own sheet and you just keep track in notes somewhere to keep me honest?
@DW well remember also that having some lords stay at your home is an honor and Harkon being out of the way doesn't get that honor often. So he will lord you mostly because of in his eyes your are of noble blood and that demands respect.
Now when you get back to camp you will be regular old Jareth again.
HM
Here's a question for you. I've noticed in my experience with PBP that most people post their characters in third person, would anyone have a problem with me posting in 1st person?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.