At the same time, it does happen to be true- in a manner of speaking. All Catholics are part of St. Patrick’s family, though the communion of saints. We’re all one in the household of God, just as God is one: Father, Son, and Holy Spirit.
In perhaps the most famous story of his life, St. Patrick was standing in a grassy field, teaching a crowd about the Trinity. His listeners, however, couldn’t comprehend that three Persons could be one God. So St. Patrick picked up a shamrock, showed it to the people, and they understood: God is three and one, just as one shamrock has three leaves.
The shamrock is a symbol seen at every St. Patrick’s Day celebration. But it’s also a symbol of what we celebrate as Catholics every day: That regardless of where we come from- Ireland or India, Tipperary or Timbuktu, we are all one in God.