Gueron

Both my son, and myself are having this issue. We are playing on the Large Map, Ware of Magic. In the initial starting place, along the coast, we each founded a settlement to include the resources next to the interesting waterfall/altar.Both of us have custom monarchs. In moving my people around, I was able to go by the bandit area, not fighting them, and then toward the spiders nest. Then when I went to return, I couldn't. My monarch could not join them either.