Strymon, which was originally a kleisoura of Macedonia, was split off sometime in the early 9th century, taking some 2,000 men (according to the estimate of historian Warren Treadgold) along with it.
Estrimón, que era orixinalmente unha clisura da Macedonia, foi separado nalgún momento no inicio do século IX, levando aproximadamente 2 000 soldados (de acordo co historiador Warren Treadgold).