Shams-ud-din Iltutmish (reigned: 1211-1236) was the founder of the Delhi Sultanate.Shams-ud-din Iltutmish was the third ruler of the Slave dynasty. He founded the Delhi Sultanate in 1211 and received the Caliph's investure in his rule. He conquered Multan and Bengal from contesting rulers, and Ranathambhore and Siwalik from the Hindu rulers. Shams-ud-dunya w'al-din Abu al-Muzzafar Naib Amir Almu'minin Iltutmish (Hindi: अलतमश; Persian: شمس الدین التتمش; Altamash, Iltutmish, r.