Colonel William Henry Sykes, FRS (25 January 1790 – 16 June 1872) was an English naturalist who served with the British military in India and was specifically known for his work with the Indian Army as a politician, Indologist and ornithologist.He retired from active service with the rank of colonel on 18 June 1833, and in September 1835 he became a Royal Commissioner in Lunacy, a post he held till 1845.[11] Sykes' collections of animals resulted in the publications of catalogues of birds and mammals from the Deccan region, many of which were published in the Proceedings of the Zoological Society.In an 1842 paper published in the Journal of the Asiatic Society, he contended that the Brahmins were likely not native to India and that Pali was older than Sanskrit.Referring to the recently translated travelogue of Faxian, Sykes paid tribute to "the literature of that remarkable people—the Chinese" that thankfully existed to illuminate India's past.He hoped that, "by proper means, applied in a cautious, kindly and forbearing spirit, such farther changes may be effected as will raise the intellectual standard of the Hindus, improve their moral and social condition, and assist to promote their eternal welfare.[3] Sykes also wrote on the Taiping Rebellion holding the British Government guilty of unjustifiable aggression towards China.[16] He also held the British responsible for precipitating the 1857 rebellion by being insensitive to local customs, citing the earlier case of the Vellore mutiny.