The correct answer is William Tayler.
Warren Hastings was the first Governor-General of India. He was not a colonial official in Bihar.
G.B. Malleson was a British historian who wrote about the Indian Rebellion of 1857. He was not a colonial official in Bihar.
Charles Metcalfe was a British diplomat and colonial administrator. He was not a colonial official in Bihar.
William Tayler was a British colonial official who served as the Commissioner of Patna from 1843 to 1853. He was nicknamed “Collector Saheb” by the locals. He was also the subject of a Hindi novel called “Collector Saheb” by Phanishwar Nath Renu.
The novel is about the life of William Tayler and his interactions with the local people. It is a historical novel that provides a glimpse into the life of a colonial official in India.