Fruzhin vs Joscelin I of Edessa

Fruzhin, son of Tsar Ivan Shishman, led an anti-Ottoman uprising in Bulgaria along with his cousin Konstantin. The rebellion aimed to restore the Bulgarian Empire but was ultimately suppressed by the Ottomans.

After the failure of the uprising, Fruzhin fled to the Kingdom of Hungary, where he served as a military commander. He participated in campaigns against the Ottoman Empire, seeking to liberate Bulgaria.

Fruzhin joined the Crusade of Varna, a combined Christian effort to drive the Ottomans from the Balkans. The crusade ended in defeat at the Battle of Varna, where Fruzhin's hopes for Bulgarian liberation were dashed.

Joscelin I fought alongside Bohemond of Antioch at Harran against the Seljuks. The Crusader army was defeated, and Joscelin was captured, remaining a prisoner for several years, weakening the County of Edessa.

After his release, Joscelin I expanded the County of Edessa eastward, capturing territory from the Seljuks. He seized lands around Turbessel and extended Crusader control into the Euphrates valley.

Joscelin I led a coalition of Crusader forces to victory at Azaz against the Seljuk atabeg of Aleppo. The victory secured the northern frontier of the Crusader states and demonstrated Joscelin's military leadership.

Joscelin I was mortally wounded while besieging a fortress near Aleppo. He died shortly after, leaving the County of Edessa to his son Joscelin II, whose weaker leadership would lead to the county's decline.