Question: Who is Ali Al-Akbar Ibn Husayn's paternal grandmother?
Sentence (from "Husayn ibn Ali"): The annual commemoration of Husayn and his children, family and companions occurs during Muharram, the first month of the Islamic calendar, and the day he was martyred is known as "Ashura" (the tenth day of Muharram, a day of mourning for Shi'i Muslims).
Relevant evidence: No