<P> The first Sultan of the Mamluk dynasty was Qutb ud - Din Aibak (قطب الدین ایبک ‬), who had the titular name of Sultan (سلطان ‬) and reigned from 1206 to 1210 . He temporarily quelled the rebellions of Nasir - ud - Din Qabacha of Multan and Tajuddin Yildoz of Ghazni . Making Lahore his capital, he consolidated his control over North India through an administrative hold over Delhi . He also initiated the construction of Delhi's earliest Muslim monuments, the Quwwat - ul - Islam mosque and the Qutb Minar . In 1210, he died due to injuries received from an accident while playing a game of polo in Lahore; his horse fell and he was impaled on the pommel of his saddle . He was buried near the Anarkali Bazaar in Lahore . </P> <P> The second Sultan was Aram Shah (آرام شاہ ‬), who had the titular name of Sultan and reigned from 1210 to 1211 . An elite group of forty nobles named Chihalgani ("the Forty") conspired against Aram Shah and invited Shams - ud - din Iltutmish, then Governor of Badaun, to replace Aram . Iltutmish defeated Aram in the plain of Jud near Delhi in 1211 . It is not quite certain what became of Aram . </P> <P> The third Sultan was Shams - ud - din Iltutmish (شمس الدین التتمش ‬), who had the titular name of Nasir Amir - ul - Mu'minin (ناصرامیر المؤمنین ‬) and reigned from 1211 to 1236 . He shifted the capital from Lahore to Delhi and trebled the exchequer . He defeated Nasir - ud - Din Qabacha of Multan and Tajuddin Yildoz of Ghazni, who had declared themselves contenders of Delhi . Mongols invaded India in pursuit of Jalal - ud - din Mangabarni who was defeated at the Battle of Indus by Genghis Khan in 1221 . After Genghis Khan's death, Iltutmish consolidated his hold on northern India by retaking many of the lost territories . In 1230, he built the Hauz - i - Shamsi reservoir in Mehrauli, and in 1231 he built Sultan Ghari, which was the first Islamic mausoleum in Delhi . </P> <P> The fourth Sultan was Rukn - ud - din Feroze (رکن الدین فیروز ‬), who had the titular name of Sultan and reigned from April 1236 to November 1236 . He ruled for only seven months and his mother, Shah Turkan, for all practical purposes was running the government . He abandoned himself to the pursuit of personal pleasure and debauchery, to the considerable outrage of the citizenry . On 9 November 1236, both Rukn - ud - din Feroze and his mother Shah Turkan were assassinated by the Chihalgani . </P>

Name the ruler who shifted capital from lahore to delhi