I think it would be better to put in the modern Turkey border North of the Dardanelles (
https://chronicle.fanack.com/turkey/geography/ ), which would be where Southern Bulgaria is, this would be totally intuitive then.
Of course in 1814, this area which Glanru correctly has as a Region was all part of the Ottoman Empire and rarely showed borders between Greece, Bulgaria & Turkey, so there's artistic license here.
I think it would be better to put in the modern Turkey border North of the Dardanelles ( https://chronicle.fanack.com/turkey/geography/ ), which would be where Southern Bulgaria is, this would be totally intuitive then.
Of course in 1814, this area which Glanru correctly has as a Region was all part of the Ottoman Empire and rarely showed borders between Greece, Bulgaria & Turkey, so there's artistic license here.
Hyd yn oed er fy mod Cymraeg , dim ond yn siarad Saesneg, felly yr wyf yn gobeithio y bydd y cyfieithu yn gywir.