 Those opposed to English rule forged alliances with those against the Protestant Reformation, making the term "Roman Catholic" almost synonymous with being Irish during that period, although that usage changed significantly over time.Like the term "Anglican", the term "Roman Catholic" only came into widespread use in the English language in the 17th century.The terms "Romish Catholic" and "Roman Catholic" were both in use in the 17th century and "Roman Catholic" was used in some official documents, such as those relating to the Spanish Match in the 1620s.