You might think that the Irish need some "luck" regarding marriage. In rural areas of Ireland, arranged marriages were common up until the twentieth century. Surely anyone getting married to a stranger would need some kind of luck to help them make it through marital life! In ancient Ireland, the bride and groom didn’t know each other well but a Celtic wedding vow leads us to believe that they had a good idea of what a strong marriage required. The bride and groom made strong pledges to each other.
