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.
Strymon, yang semula merupakan kleisoura dari Makedonia, dipisah-pisahkan pada awal abad ke-9, mengambil sekitar 2.000 orang (menurut perkiraan sejarahwan Warren Treadgold) bersama dengan itu.