Question: What is the date of death of Lutfunnisa Begum's husband?
Sentence (from "Siraj ud-Daulah"): Siraj succeeded his maternal grandfather, Alivardi Khan as the Nawab of Bengal in April 1756 at the age of 23, but he was soon betrayed by his commander in chief Mir Zafar in the Battle of Plassey against the British.
Relevant evidence: No