[2] According to tradition, St Patrick established a bishopric here c. AD 450 and placed it in the care of Saint Cianán in 489.

In 1014 the bodies of Brian Boru and his son Murchad mac Briain lay in state at Duleek.

[3][4] St. Patrick's Church, Duleek is a simple rectangular structure.

There is a pointed doorway of undressed stone in the southeast wall.

A limestone slab in the wall reads ÓR DO SCANLA_N ("pray for Scanlain").