What's a ballpark number to house the refugees? Cedwyn is in a much better situation financially to take them on, I doubt they'd want to split up unless absolutely necessary.
They number about a hundred and fifty. That's about ?5 per year to support them at a subsistence level, all totalled (note that does not account for warriors - each warrior will take more to support). If you want them to be comfortable, it will cost twice as much.
It's not all directly coin - you can grant them hunting rights on your lands, for example, but that will mean game will be harder to come by for your larders, so the effect is about even. If you want them to farm, you'll need to provide them with some manorial improvements to do so, such as clearing land and building homes for them.
Depending on what happens with the Earl, he may grant them a steading and support in exchange for mercenary service, but even so they are going to need a year worth of support.
If one of you is willing to foot the bill, they can all fit on one manor. You can split the costs and keep them together, but the part that is split must add 20% to account for transport and other difficulties related to remote support. If they split up and go to two manors, they're fed and clothed locally, so it's cheaper.
They could also build a camp in the wilds somewhere, making their own community. If you guys want to contribute to that, your donations would both need to be increased by 20% to account for remote support. However, they might run into problems if they did that without the approval of the Earl.
The cost is basically ?1 per 50 refugees for subsistence-level support. ?2 per 50 refugees gives them a comfortable living. Certainly nothing extravagant, but they won't be living hand-to-mouth either.
If Arne or Valka have the funds themselves, they would pay their own support and not rely on the knights.
So, that's all a long-winded way of saying that it's going to cost ?5 to keep them all alive, ?10 to give them a comfortable living. You can divvy that up anyway you like. There is room on either manor for them to camp, or they can camp in unclaimed land (but risk ticking off the Earl). They could even stay where they are on the riverbank near the standing stones, using Merlin's word and the old adage "it is easier to ask forgiveness than permission" and bet the Earl will be OK with the arrangement.
And remember, anyone you want to work as a warrior will cost ?1 each. This will cover cost of living, equipment and maintenance of that equipment. You don't have to support any warriors, but it's an option. ?1 is equivalent to a common foot soldier, lightly armoured, and equipped with a spear or equivalent.
