Syed Faiz ullaah was the founder of Sadaat e Saithal.He is known as Dada Faiz ullaah. His ancestors belong to Sadaat-e-Bara, Punjab.belong to the family of Sayyids or the descendants of the Prophet Muhammad through his daughter Fatimaand son-in-law and cousin Ali who belonged to the Banu Hashim Clan of the Quraish Tribe.
His grandfather Syed Amaan ullaah was the jagirdar of Abhipur,Katehar Syed Amaan ullaah has jagir of 484 villages, he manage all the property and collect revenue and send it to Mughal Emperor,delhi,. Amaan ullaah died in 1611CE. He buried in Abhipur. After death of Amaan ullaah all the responsibility of jagir goes to his elder son Syed Usmaan e Haidari. his younger brother Rustam work with him. But Some people from his maternal side forced him against his brother Usmaan. some circumstances takes place greedy Rustam killed his brother Usmaan e Haidari returning from KOT at the place of Biyabaani Bareilly District. Usmaan e Haidari was buried there.
Today Usmaan e Haidari's Mazaar famous as Peer Biya Baani in Bareilly District, thousands of devotee come to his mazaar for their wishes and muraad, At that time Usmaan's only son Faiz ullaah was just 8 years old, Rustam takeover all the jagirand other property. He tried to kill Faiz ul laah also. Faiz ullaah and his mother escaped with the help of two faithful workers one was Raam singh (Yadev)and second was bakhtawar khan(Pathan) of deobawat. by the help of Sayyid brothers of Sadaat-e-Bara, Faiz ullaah meet shah Jahan at Delhi,and stay there.
After ten years studying and developing in shahjahanabad Old Delhi. Faiz ul laah return back and with the help of shahi army regain the jagir and all their property. Rustam was arrested,and ashamed. Faiz ul laah forgive Rustam and give him eleven villages for his livelihood as 'Khata', 'Jareeli','Barkhan','Satuiya','Noua Nagla','Grem' etc. After death Rustam buried in Barkhan,Nawabganj, Bareilly his descendants also live there.
After taking charge of their property Faiz ul laah prefer to stay in Saithal. He develop a village in East of Saithal by his name called Faizullahpur, and another village by his father's name Usmanpur, although today Usmanpur village are not seen in map, but in the revenue records Usmanpur village is still register. Faiz ullaah develop a village By the name of his great grandfather Syed noor uddin Laad name as Ladpur in South-east of Saithal later called Ladpur Usmanpur,and a village in north name is Dandia today which is called Dandia Faizullapur[1]
another village is develop by the name of syed faiz ullaah's elder son mohd faazil name as Fazilpur and one village Sadarpurby the name of Sadr Jahaan son of Mohd faazil, far away is a village khaanpur by the name of khaan jahaan[2]