After Sher Shah Suri conquered malwa from Qadir shah, he appointed Shujaat Khan as the governor. His son, Baz Bahadur, declared himself independent in 1555 CE. Baz Bahadur was the last sultan of Malwa.
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.