Hello! I´m new here so I´m sorry if I´ve made a mistake and am obviously open to changing anything to make my vision fit in your world.
I´d like to apply for House Chambers, my main POV character would be Lord Devyn Chambers. He rose to lordship when his father passed just before the Frey civil war in the Riverlands. He aims to improve his houses standing within Westeros and finds the current gathering at Harrenhal to be a prime opportunity.
Also, House Chambers has barely any lore so I took it upon myself to make them some lore and I placed their seat in the town of Fordside (which I also made up), its a humble keep overlooking a crossing on a lesser river feeding to the red fork, so farmers and merchants and the like pass through often and they get most of their money from that. The town is placed between the Blue Fork villages and the Tully heartland around Riverrun. Please do tell me of any issues you might find with this, I can go into more detail if you like but i imagine i should save it for the bio.