History
Gündüz Bey's son, Aydodu Bey, was raised by his uncle Osman Gazi and fought alongside him in several wars.
He died when he was very young, in July 1302, during the Koyunhisar War (probably 17-18 years old).
His burial lies on the route from Dimbos, now known as Erdoan Village, to Koyunhisar, between Bursa and Yenişehir.
He claims that Oruç Beg's grave, known as Tevârîh-i l-i Osman, was known as the Turkish Khan Tomb, and that the horses' pains were relieved after three rounds around the tomb.
Despite the fact that Gündüz, Osman Bey's eldest brother, desired the establishment of a state, he only saw it for a few months before dying at negöl in 1299.
In the Afterlife: Ertugrul
Gündüz Bey did not appear in the first season of the Resurrection:Ertugrul series because he could not due to history.
Then, in the second season, after Halime Hatun and Erturul Bey married, Halime Erturul revealed that they will have a son.
After such bloody conflicts and perils, the son is born.
They demonstrated Gündüz's diminutive size in subsequent seasons.
Gündüz Bey gets ready to fight as a musketeer.
Gündüz Bey is stunned after Halime Hatun dies as a result of the script, and he swears to look after his two brothers like a noble brother.
Ten years pass in the sixth season, and Daytime expands.
He has feelings for the daughter of a Byzantine landowner.
lbilge Hatun is held responsible for her father's death.
At the moment, Gündüz Bey was with his lover, but he couldn't inform his father.
The fact that Gündüz Bey did not murder lbilge Hatun's father became public.
They also said that Gündüz was paid tribute or was a usury in the opening chapters.
Erturul Gazi was outraged by his son when this turned out to be true.
And by the end of the series, Erturul Gazi and his sons have grown stronger in unity and are preparing to return to their former state.