He was born in Roman Britain, kidnapped at the age of 16, and taken to Ireland as a slave. Although he later escaped, he returned to Ireland and brought Christianity to the country.
One of the well known legends about him is that he explained the Holy Trinity (Father, Son and Holy Spirit) using the three leaves of a native Irish clover, the shamrock.
Here are teaching moments for your child. Play a guessing game and give a shamrock or other green prize for the correct answer: