Lord Anglesey supported the king's administration in parliament, but opposed strongly the unjust measure which, on the abolition of the court of wards, placed the extra burden of taxation thus rendered necessary on the excise.
In 1681 Anglesey wrote A Letter from a Person of Honour in the Country, as a rejoinder to the earl of Castlehaven, who had published memoirs on the Irish rebellion defending the action of the Irish and the Roman Catholics.
In so doing Anglesey was held by Ormonde to have censured his conduct and that of Charles I in concluding the "Cessation," and the duke brought the matter before the council.
The title of Earl of Anglesey was created twice in the Peerage of England.
However, the Earldom and Barony became extinct on the death of his son, the second Earl, in 1661.
The second creation came in 1661 when Arthur Annesley, 2nd Viscount Valentia, was created Earl of Anglesey, in Wales, and Baron Annesley, of Newport Pagnel in the County of Buckinghamshire.