Gunduz Bey

Gündüz Bey was the eldest child of Ertugrul Ghazi, and the elder brother of Osman Ghazi, the founder of the Ottoman Empire. Although he was worthy of a principality like Osman, he stood with Osman until the end and became one of the founding names of the Ottoman Empire. He was the husband of Ayşe Hatun and the father of Aktemur Bey, Aydoğdu Bey and Efandise Hatun. He was the father in law of his nephew Orhan Ghazi due to his daughter Efandise Hatun married him. 
==In the Resurrection: Ertugrul==
Gündüz Bey appeared from the second season of the Resurrection:Ertugrul series. After Halime Hatun and Ertuğrul Bey got married, in the second season, Halime informed Ertuğrul that they were expecting their first child. Their son Gunduz was born.
In the following seasons, they showed the childhood of Gündüz. Gündüz Bey prepares himself for and combat. After Halime Hatun dies, Gündüz Bey was overwhelmed and he promised to take care of his two brothers like a noble brother.
In the fifth season, 10 years pass and Gunduz has grown into a young man. He loves the daughter of a Byzantine landlord. İlbilge Hatun is blamed for the death of her father. Gündüz Bey was with his lover at that time, but he could not tell his father. Then it was known that Gündüz Bey did not kill İlbilge Hatun's father.
In the first chapters, they also said that Gündüz was paid tribute or that he was a usury. When this turned out to be true, Ertuğrul Gazi was offended by his son.
And at the end of the series, Ertuğrul Gazi and his sons become stronger with the same unity and prepare to become a state as usual.
==In the Establishment: Osman==
In Kurulus Osman he is shown as Osman I older brother with his siblings Osman and Savci. 
He never gave up against Mongols or Byzantines. He was a kind-hearted person. He is married to Ayse Hatun. 
He is well know for supporting Osman and helping him be a leader of tribe. He tries to unite his siblings and honors his father. 
However, in the series, it is shown that Gunduz is being influenced by Vizier Alemshah. Osman doesn't kill him as he learns his mistakes and realizes truth. He is blamed again for Mari's death, but truth prevails and he and his wife were absolved of any further false accusations. He was martyred at the conquest of Inegöl and took his last breath among the presence of his loved ones. 
Category:Characters
Category:People of the Kayı Principality
Category:Historical Turkic People
Category:Beys