He was also a descendant of Shahab al-Din Suhrawardi.Ubaidullah's father was Shah Aminuddin Suhrawardy (the last Pir (Sufism) in the Suhrawardy family). He had two brothers both of whom were lawyers and subordinate judges (the highest rank available to Indians under British rule at the time). One of his brothers' was named Maulvi Mubarak Ali Suhrawardy alias Mohammad Ali.