Abdullah al-Aftah
Abdullah al-Aftah ibn Ja'far al-Sadiq (d. 766 CE / 149 A.H.) was the eldest surviving son of Ja'far al-Sadiq (after al-Sadiq’s death) and the full-brother of Isma'il ibn Jafar.
Abdullah’s title al-Aftah derives from the Arabic words aftah al-ra’s (broad-headed) or aftah al-rijlayn (broad-footed) used to describe his appearance.
Ja'far al-Sadiq
Jaʿfar ibn Muḥammad aṣ-Ṣādiq (700 or 702–765 CE), commonly known as Ja'far al-Ṣādiq or simply as-Sadiq (The Truthful), was an 8th-century Muslim scholar and scientist.
He is considered as an Imam and founder of the Ja'fari school of jurisprudence by Twelver and Isma'ili Shi’as, and a major figure in the Hanafi and Maliki schools of Sunni jurisprudence.
He was a descendant of the Caliph Ali and Fatimah bint Muhammad on the side of his father, Muhammad al-Baqir, and of Muhammad ibn Abu Bakr on the maternal side of his family, Umm Farwah bint al-Qasim.
Muhammad ibn Abi Bakr was raised by Ali, but was not his son.
Ali used to say: "Muhammad Ibn Abu Bakr is my son but from Abu Bakr's lineage".
Al-Sadiq is the 6th Imam for Twelvers, is recognized by the majority of the Shi’a as an Imam, and is revered in Sunni Islam as a transmitter of hadiths, therefore a prominent jurist, and a mystic to Sufis.
Despite his wide-ranging attributions in a number religious disciplines, no works penned by Ja'far himself remain extant.
Al-Sadiq was born in either 700 or 702 CE.
He inherited the position of imam from his father in his mid-thirties.
As a Shi’a Imam, al-Sadiq stayed out of the political conflicts that embroiled the region, evading the many requests for support that he received from rebels.
He was the victim of some harassment by the Abbasid caliphs, and was eventually, according to Shi’a Muslims, poisoned at the orders of the Caliph Al-Mansur.
In addition to his connection with Sunni schools of Sunni jurisprudence, he was a significant figure in the formulation of Shia doctrine.
The traditions recorded from al-Sadiq are said to be more numerous than all hadiths recorded from all other Shia imams combined.
As the founder of Ja'fari jurisprudence, al-Sadiq also elaborated the doctrine of "Nass" (divinely inspired designation of each imam by the previous imam), and "Ismah" (the infallibility of the imams), as well as that of Taqiyyah.
The question of succession after al-Sadiq's death was the cause of division among Shi’a who considered his eldest son, Isma'il (who had reportedly died before his father) to be the next Imam, and those who believed his third son Musa al-Kadhim was the imam.
The first group became known as the Ismailis and the second, larger, group was named Ja'fari or the Twelvers.
Tjuyu
Tjuyu( sometimes transliterated as Thuya or Thuyu) was an Egyptian noblewoman and the mother of queen Tiye, and the wife of Yuya.
She is the grandmother of Akhenaten, and great grandmother of Tutankhamun.
Mona Hopton Bell
Mona Hopton Bell( 1867- 1940) was a British artist, best known for her portraits of civic figures.
She was the grandmother of the painter Jean H. Bell.
Anne Denman
Anne Denman( 1587–1661) was born in Olde Hall, Retford, Nottinghamshire.
Through a fortunate second marriage with Thomas Aylesbury, she became the grandmother of Lady Anne Hyde, Duchess of York and great- grandmother of Queen Mary II and Queen Anne.
Kaoru Hatoyama
After the elections of 2009, she became more widely known as the grandmother of Prime Minister Yukio Hatoyama and his politician brother Kunio Hatoyama.
Muhammad ibn Abdullah al-Aftah
Muhammad ibn Abdullah al- Aftah ibn Ja'far al- Sadiq alias Maymūn Al- Qaddāḥ was a figure whose existence is contested: a portion of the Fathite Shia Muslims( followers of Abdullah al- Aftah ibn Ja'far al- Sadiq), believed that Muhammad was the son of Imam Abdullah al- Aftah( died 766 CE), whom they believed to be the Imam after his father Ja'far al- Sadiq.
This assertion is contested by others, including many Fathites, who believe that Abdullah died without issue.
When Abdullah al- Aftah died without an issue to succeed him in the Imamate, a portion of his followers believed in the necessity of the continuation of the Imamate in the children and the grandchildren of the Imam through pure vertical inheritance.
Due to this they could not shift to the belief in the Imamate of the brother of Abdullah al- Aftah, Musa al- Kadhim.
They therefore believed that Abdullah secretly had a son, claiming that this son was the Mahdi.
They argued:" His name corresponds to the famous Prophetic" hadith"( of Muhammad):
' His name( i.e. the Mahdi) is my name( i.e. Muhammad), the name of his father is the name of my father( i.e. Abdullah).'"
There maybe evidence that he had a son named Sayed Alawi.
Below is a detailed family tree.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Gülbahar Hatun (wife of Mehmed II)
Gülbahar Hatun( 1432 – 1492) was the consort of Sultan Mehmed II, and mother of Sultan Bayezid II of the Ottoman Empire and the grandmother of Selim I.
Hubba bint Hulail
Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic" Nabī"( Prophet) Muhammad ibn Abdullah.

Question: Who is Abdullah Al-Aftah's paternal grandmother?
Answer: Farwah bint al-Qasim