[X] Royal aid to build a castle fit for a high lord upon Oldstones and the infrastructure around it to make it the centerpiece of large-scale settlement. House Frey will be a mighty power in the local area, and having a counter-weight to their influence will be useful to you in the future. Not so mismatched a pairing in vassalage as that held between House Tully and Houses Bracken and Blackwood who are both Great Houses in their own right, but more equal than Walder might be comfortable with. House Keath will be one among many Riverland Houses to gain a city charter for themselves, the area is too rich in farmland and criminally underdeveloped given how integral the rivers will be to trade.