1: Does this mean that all non-infantry/Noble blocks must be in the same area with Edward I in order to winter in Scotland? For example could 2 archers winter in Lothian if Edward I is wintering in Mendieth?
To be clear:
1. Nobles always have to go home.
2. Any red unit (non-Noble) can winter with Edward I in Scotland if they are in his area at the end of the year. They cannot magically 'teleport' there. There are no castle limits in his area.
3. Infantry can, as well, winter in any area in Scotland, as long as they follow the castle limits.