He'd return the favor of secrecy since he wouldn't want people to know that he's of noble blood either. So it can be this unspoken pact between them. Wraith would learn a lot from Camlan and would totally bro it up but in a lot of silence because broody-silent-type lol I think because he grew up under the mountains, trees just fascinate him as do his woodland cousins even though he'd never admit it.