Anstruther was the head of an ancient Fife family which dominated the Anstruther Easter Burghs and possessed a considerable interest in the county. He was a man of some arrogance and was devoted to his wife, on whose whim he removed an entire village.
There is no evidence that Anstruther attended the House with any frequency after 1790 and no speeches of his are known during this period. The Whigs ventured to assert that if present he would have supported their bid to exempt Scotland from the Test Act, 10 May 1791.
