[quote=@gowia]
I will offer up my interest now, would a religious order be acceptable for a house? So some of the priesthood see the colliding of the two moons as a sign for change a lnd stir people into a bit of a frenzy and grab some land and what not to work from (think Knights of St John or the Tuetonic Order in a way but formed in opposition to the main religion, not as a part of it) . Partly because they do believe the action heralds great change in what should be believed, but also just some plain old fashioned power hunger. 
[/quote]

I'd prefer great houses stay great houses, though with your plot in mind, I could easily see a deeply religious leader of a house (Or whoever can kill and replace the leader) using their wealth and status to fund this new religious order Stannis-Style for the reasons you mentioned.