Title: Muhammad ibn Abi'l-Saj
Content:  Muhammad ibn Abi'l-Saj (محمد بن أبي الساج) also known as Muhammad al-Afshin (died 901), an Iranian appointed general of al-Mu'tadid, was the first Sajid amir of Azerbaijan, from 889 or 890 until his death. He was the son of Abi'l-Saj Devdad.
Title: Muhammad ibn Abdullah ibn Ja'far
Content:  His father was Abd Allah ibn Ja'far ibn Abi Talib, a companion of the Islamic prophet Muhammad, and his mother was Zaynab, the daughter of Ali ibn Abi Talib and Fatima. His ancestor was Ja'far al-Tayyar, whom Muhammad (the prophet) had appointed as the head of the emigrants to Abyssinia.
Title: Abu Ja'far Ahmad ibn Muhammad
Content:  Abu Ja’far Ahmad's father was named Muhammad. Muhammad was very distantly related to the founder of the Saffarid amirate, Ya'qub-i Laith Saffari; his great-great-grandfather had been the brother of Ya’qub's great-grandfather. Muhammad shared a closer connection with Ya’qub's brother and successor Amr bin Laith, having married the latter's granddaughter.
Title: Muhammad ibn Abi'l-Saj
Content:  Like their father, Muhammad and his brother Yusuf had long and active careers. In 879 Muhammad was appointed by the Saffarid Amr ibn al-Layth as his representative in Mecca, and was later appointed by the Abbasids as the governor of Anbar and Rahba. When the amir of Egypt Ahmad ibn Tulun died in 884, Muhammad was presented an opportunity to capture some of his territories in Syria from his inexperienced son and heir, Khumarawayh. He allied himself with another Abbasid general, Ishaq ibn Kundaj, who had received authorization and some troops from al-Muwaffaq. Ishaq clashed with the Tulunid governor of Raqqa in 
Title: Abul Muhasin Muhammad Sajjad
Content:  Muhammad Sajjad was born in the Panhessa village in the Nalanda district of the Bihar Province in Colonial India. His father was Hussain Baksh who died when he was only 4 years old. Sajjad's elder brother was the revered Sufi saint Sufi Ahmad Sajjad who lived until 1948. Sufi Ahmad Sajjad's Mazar is located near a mosque in the village where Urs of the great Sufi Saint is celebrated every year on the 27th day of Muharram. The shrine's current Sajjada Nashin (hereditary administrator) is the saint's grandson Pir Syed Shah Mohammad Ziauddin (born 1953). Sajjad started studying at Madrasa Islamiya in Bihar, and then studied at Madrasa Subhaniya in Allahabad for about six years. His major teachers include Abdul Kāfi. He graduated in 1323 AH. Sajjad completed his studies in Bihar Sharif, Deoband, and Allahabad.
Title: Muhammad ibn Ali ibn Abdallah
Content:  Muhammad ibn Ali ibn Abdallâh (محمد بن علي بن عبد الله) or Muhammad al-Imâm (679/80 - 744) was the son of Ali ibn Abd Allah ibn al-Abbas and great-grandson of al-‘Abbas ibn ‘Abd al-Muttalib, the uncle of the Islamic prophet, Muhammad. Born in Humeima in Jordan, he was the father of the two first 'Abbâsid caliphs, As-Saffah and Al-Mansur, and as such was the progenitor of the Abbasid dynasty.
Title: Sa'd ibn Abi Waqqas
Content:  Saʿd was born in Mecca in 595. His father was Abu Waqqas Malik ibn Uhayb ibn Abd Manaf ibn Zuhrah from the Banu Zuhrah clan of the Quraysh tribe. Uhayb ibn Abd Manaf was the paternal uncle of Aminah bint Wahb, mother of Muhammad. Saʿd's mother was Hamnah bint Sufyan ibn Umayya ibn Abd Shams ibn Abd Manaf. Sa'd was related with Muhammad as the Prophet mother, Aminah, hailed from Sa'd clan, Banu Zuhrah. The lineage of Sa'd was testified by Muhammad in recorded tradition of a dialogue between the two, when the former asking "Who am i?", which replied by the latter "You are Sa'ad bin Malik bin Uhayb...May the curse 
Title: Zaynab bint Jahsh
Content:  Zaynab's father was Jahsh ibn Riyab, an immigrant from the Asad ibn Khuzayma tribe who had settled in Mecca under the protection of the Umayya clan. Her mother was Umayma bint Abdulmuttalib, a member of the Hashim clan of the Quraysh tribe and a sister of Muhammad's father. Hence Zaynab and her five siblings were the first cousins of Muhammad. Zaynab was said to be quick to lose her temper but also quick to calm down. She was a skilled tanner and leather-worker. She continued with this line of work throughout her life, even after she no longer needed the money. The name of her first husband is not known, but he had died by 622. At that time Zaynab, who had become a Muslim, was among those who accompanied her brother Abdullah on the Hijra to Medina.
Title: Saf ibn Sayyad
Content:  He was born in an Arabian Jewish family. From his name, his father might be Sayyad. His hostility towards Muhammad since childhood led scholars to speculate that he is Ad-Dajjal.
Title: Sa'id ibn Jubayr
Content:  Sa'id ibn Jubayr (665&ndash;714) (سعيد بن جبير), also known as Abū Muhammad, was originally from Kufa, in modern-day Iraq. He was regarded as one of the leading members of the Tabi'in (d. ca. 712). Sa'īd is held in the highest esteem by scholars of the Shi'a and Sunni Islamic tradition and was considered one of the leading jurists of the time. He also narrated several hadith from Ibn Abbas.

Question: Who is the father of Muhammad Ibn Abi'l-Saj?
Answer: Abi'l-Saj Devdad.