Who was the last ruler of the Tughluq dynasty of the Delhi Sultanate?

1 The Tughluq dynasty ruled the Delhi Sultanate from 1320 to 1414. 2 Firuz Shah Tughluq reigned from 1351 to 1388. 3 After Firuz Shah Tughluq, the dynasty weakened significantly with several short-lived rulers and succession struggles. 4 Nasir-ud-din Mahmud Shah Tughluq was the last ruler of the dynasty, reigning formally from 1394 to 1413, although his effective control was limited, especially after Timur's invasion in 1398. 5 Ghiyas-ud-din Tughluq Shah II and Nasrat Shah were other claimants or rulers during the period of decline after Firuz Shah.