Yakub I of Germiyan

Yakup I
Bey of Germiyanids
Reign	1303-1327 (?)
Predecessor	founded the dynasty
Successor	Mehmed I of Germiyan
Died	after 1327.
Dynasty	Germiyanid
Father	Keramüttin Alişir Bey
Religion	Islam

Yakup I of Germiyan (died after 1327) was the founder of the Germiyanid beylik in Kütahya. He was the son of Kerimüddin Alişir and was succeeded by Mehmed I of Germiyan.

Reign

He refused to recognize the authority of Mesud II and swore allegiance to the Ilkhanids, which led to the establishment of his state. He gathered a significant amount of power and raided westwards, forcing the local Byzantine Empire to pay tribute for some time. He lost Alaşehir to a force of Byzantine mercenaries from Catalonia, but retook it in 1314. He also conquered Ayasluğ (present Selçuk) and Angir (present Simav). He established a number of foundations in Afyon.

References

• Büyük Larousse, vol. 24, p. 12368, Milliyet Gazetesi Yayınları, "Yakup Bey I"