The Irish National Emblem is composed of two symbols: the SHAMROCK and the HARP. The SHAMROCK, a three-leaf clover, is an ancient symbol of Ireland and is believed to have been used by Saint Patrick to explain the concept of the Holy Trinity. The HARP, a stringed instrument, has been used as a symbol of Ireland since the Middle Ages and is featured on the national flag and coat of arms. Together, the SHAMROCK and the HARP represent the history and culture of Ireland.