Your trying to figure out what to give him as 'property' besides a planet?
Not too hard if you look at how titles were handed out as the Middles Ages came to an end. First, you could include him in some order, but not a national order but say a regional one? Something like the Draconis March has a Noble Order of the Dragonslayer, an order that is created by the march lord for those who contribute to the defense of the march against the Combine. Of course, the depends on location and your character's backstory.
Sometimes the 'property' can be information. How about your character owns the holonet charter on planet X? or planet X, Y & Z? Or your character owned the company that successfully reverse engineered EndoSteel for C region? Your company vaults from obscurity to a headliner, you pull lots of investment capital to build half a dozen new orbital station factories in your region, and you are the prime supplier of EndoSteel to Robinson BattleMechs (which also nets you the title to join the order?) Or you own a recharge station in a system or two, family holdings from the post-SLDF break up where your umpteen great grandfather was the regional supervisor for some TH company? Watch out for that nasty great uncle and his son, they wanted to inherit the title and stations from your ancestors.