St. Patrick was born in Scotland around the year 387. When he was about 16, he was captured and sent to Ireland to become a slave. At the time, Ireland was pagan. During his captivity, St. Patrick spent much time in prayer. Around the age of 20, he had a dream that he should return to Britain and his family, and he did. He studied and became a priest and then a bishop. He evangelized England then he started in Ireland. He worked to convert people in Ireland for 40 years, and he died around 461. The shamrock is associated with St. Patrick and Ireland because St. Patrick used the shamrock to help explain the Trinity. He is patron saint of Ireland.