Royal Wootton Bassett
One thing I found ambiguous in the rules was where you're allowed to place castles. The 3 most likely possibilities would be:
1. Anywhere (including Enemy-held regions)
2. In regions held by Royal or Baronial units
3. In regions held by Royal units
(all excluding regions where there is currently no castle)
I've been assuming option 1.
Does anyone know what the official ruling is?
Anywhere; though there would have to be an extremely good reason for me to place a castle on enemy-held territory.