In the first parliament elected under this "Instrument" he sat for Wiltshire, having been elected also for Poole and Tewkesbury, and was one of the commissioners for the ejection of unworthy ministers.
This Robert Livingston, founder of the American family, became in 1675 secretary of the important Board of Indian Commissioners; he was a member of the New York Assembly in1711-1715and 1716-1727 and its speaker in 1718-1725, and in 1701 made the proposal that all the English colonies in America should be grouped for administrative purposes "into three distinct governments."
In 1832 he was knighted, and after serving as one of the municipal corporations commissioners, became deputykeeper of the public records in 1838, holding this office until his death at Hampstead on the 6th of July 1861.
Upon the restoration of the parliament on the 26th of December Cooper was one of the commissioners to command the army, and on the 2nd of January was made one of the new council of state.
Cooper was one of the twelve commissioners who went to Charles at Breda to invite him to return.