Khwaja Abu Malik Isami is the author of Futuh-al-Salatin is yet another elaborate account of the Delhi Sultanate. It consists of almost 12,000 verses. The Futuh-us-Salatin is a history of Muslim rule in India until 1349-50.
Mubarak Shah was the second ruler of the Sayyid dynasty which ruled the Delhi Sultanate after the fall of the Tughlaq dynasty. He succeeded his father, Khizr Khan to the throne in 1421 CE.
Khwaja Nizam-ud-Din Ahmad Bakshi was a Muslim historian of late medieval India. He was the son of Muhammad Muqim-i-Harawi. Nizamuddin Ahmad wrote the book Tabaqat-i-Akbari which is a general history of the Muslim rule in India coming down to the year of its composition.
Battle of Chausa was fought near Buxar. Humayun was badly defeated and Sher Khan adopted the title of Sher Shah. Humayun barely escaped with his life from the battle field.