However, Strez turned against his suzerains to become a Bulgarian vassal and joined forces with his former enemy Boril against the Latins and then the Serbs.
Strez turned against his suzerains. This was however. This was to become a Bulgarian vassal. Strez joined forces with his former enemy Boril against the Latins. This was however. Strez joined forces with his former enemy Boril against then the Serbs. This was however.