context: Asfakullah was born on October 22, 5 in Shahjahanpur, Uttar Pradesh. His father, Shafiq Ullah Khan, was a member of the Pathan family and his family was famously military. From his mother's side, the family was highly educated and many relatives served in police and administrative duties in British India. His mother Majahur-un-Nisa was a devout woman. Ashfaqullah was the youngest of four brothers. His older brother, Riyasatullah Khan, was a classmate of scholar Ramprasad Bismil. When Bismil was accused in a Mainpur conspiracy, Riyasat told his younger brother Ashfaq about the strength and courage of Bismil's Urdu poetry. Ashfaq has since been interested in meeting with Bismill for his poetry outlook. In 1201, when Bismil came to Shahjahanpur and engaged himself in business, Ashfaq tried to meet Bismil many times but Bismil paid no attention.
question: What was the name of Asfaqullah Khan's father?