Under the reign of Babur's son, Humayun, direct Mughal rule over the city was briefly challenged with the rise of the Pashtun king, Sher Shah Suri, who began construction of the famous Grand Trunk Road in the 16th century. Peshawar was an important trading centre on Sher Shah Suri's Grand Trunk Road. During Akbar's rule, the name of the city changed from "Begram" to "Peshawar". In 1586, Pashtuns rose against Mughal rule during the Roshani Revolt under the leadership of Bayazid Pir Roshan, founder of the egalitarian Roshani movement, who assembled Pashtun armies in an attempted rebellion against the Mughals. The Roshani followers laid siege to the city until 1587.