Maulvi Ahmadullah Shah was a key leader in the revolt of 1857, particularly in the region of Faizabad. He was called 'Danka Shah' due to his use of a large drum or 'danka' to summon people and rally the forces during the uprising. His leadership and bravery in the revolt earned him this title. He was highly respected by the rebels for his courage and leadership in the face of British forces.