Which Governor General of Bengal underwent impeachment proceedings in the British Parliament ?

Who among the following was prosecuted for impeachment by the British Parliament?

At the time of the establishment of Asiatic Society in Calcutta, who was the Governor-General of Bengal?

Who was the Governor-General of Bengal when the Asiatic Society was founded?

Who was the first Governor General of India?

During the tenure of which Governor-General was the ‘Ancient Monuments Preservation Act’ passed -