What a thought-provoking campaign this Byzhighexpert of RRMike's is!! This crusade in Bulgaria started me into a train of thought.
Imagine that this Sicilian crusade is firmly rooted there and the province suddenly becomes rebel. What then? I see three possible developments:
1. The province goes over to the Sicilians (as there is their crusade in it) and the rebels are sucked into the crusading army or change their allegiance and become Sicilians.
2. The province goes over to the Sicilians (as there is their crusade in it) and the crusade has to fight the rebels as now they are rebels not against the Huns but against the Sicilians.
3. The province stays rebel and tolerates the crusade within its boundaries much as the Huns did.
Does anyone have any clue which way the situations may develop?