By 1911 some Irish couples were limiting fertility. Marital fertility fell slowly after independence. The gap between family size in Northern Ireland and Ireland and between Catholic and Protestant families widened. The Irish Free State introduced legislation restricting access to information and prohibiting the sale and importation of contraceptives, legislation that reinforced Catholic teaching. Although similar legislation existed in other countries, it had much less impact than in Ireland. The near-universal practice of religion by men and women meant that Catholic teaching could be enforced in the confession box, and this teaching, combined with the valorisation of large families by Irish society, provided uncaring husbands with a licence to procreate, irrespective of the health or the wishes of their wife. Before the 1960s there was little information available about the ‘safe period’, a church-permitted method of regulating fertility, which was promoted by Catholic organisations in other countries. By 1961, despite marrying at a later age, Irish couples had the largest families in the western world, their fertility was seriously out of line with Catholics elsewhere.