Khizr Khan was succeeded by his son Sayyid Mubarak Shah. He succeeded after his father's death on May 20, 1421. Mubarak Shah referred to himself as "Muizz-ud-Din Mubarak Shah" on his coins. After the death of Mubarak Shah, his nephew, Muhammad Shah ascended (came to throne) the throne. His son Sayyid Ala-ud-Din Shah succeeded him as the king.Alam Shah was a weak ruler. In 1451 he surrendered Delhi to Bahlul Lodi. He went to Budaun where he spent rest of his life.