St Patricks Cathedral is the largest church in Ireland. A wooden church was built on the present site in the V th century when Ireland's patron saint, St Patrick, baptised his first Christian converts at a well on the site. The present church dates from the XII th century. There are many religious and military artefacts, Ireland's largest organ, and statues of Jonathan Swift and Douglas Hyde, Ireland's first President. When an argument between two Norman earls, was resolved, a hole was cut in a door to shake hands - this event took place in 1492 and the hole still exists. The cathedral has a musical tradition with St Patrick's Choir School which was founded in 1432.