mar 7, 1670 - Oliver Plunkett, the Roman Catholic Archbishop of Armagh since 1669, is allowed to return to Ireland for the first time in more than 22 years, after a new policy of tolerance of Catholicism is enacted in England. Plunkett had departed for Rome in 1647 during the Cromwellian conquest of Ireland. Later executed in 1681 on charges of plotting an invasion of Ireland, Plunkett is canonized as a saint of the Roman Catholic Church in 1975