Hacı İlbey

Hacı İlbey  (also known as Hadji Ilbeg; c. 1305–1371) was an Ottoman commander during the early years of the empire.

Early years
He was probably born around 1305 in Balıkesir, northwestern Anatolia. He was a commander of the Beylik of Karasi, a principality situated at the Asiatic coast of the Dardanelles strait. However, during the interregnum in the beylik after 1340s, Hacı İlbey left Karasid territory and took service in the Ottoman beylik, the future Ottoman Empire, situated at the north of the Karasids. In 1361, all territory of Karasids was annexed by the Ottomans during the reign of Orhan.

Ottoman commander
Hacı İlbey was tasked with conquests in Rumeli, where the Turks under Suleyman Pasha, son of the Ottoman Beylik's second ruler Orhan, had set foot in 1354. In Rumeli, Hacı İlbey proved himself as a competent commander. He captured Lüleburgaz (medieval Arkadiapolis) and possibly Edirne (medieval Adrianopolis), which soon became the capital of the empire.

Battle of Çirmen
While the new sultan Murat I was occupied in capturing Biga (Pigas of the antiquity) in Anatolia, a Crusader army appeared near the river Maritsa in Rumelia. Hacı İlbey was sent with a relatively small expedition force over to Crusaders. He defeated the Crusaders in a surprise night attack. There is no consensus on the date of this event. According to Ottoman chronicles, the battle took place in 1364, and according to western sources in 1371.

Death
Shortly after the battle of Çirmen, Hacı İlbey died. According to a legend, he was poisoned by Lala Şahin Pasha, a senior Ottoman commander, who was Hacı İlbey's rival and worried of his increasing reputation.