Roscam

Roscam stands on the site of a very early (5th century) monastery, with legend linking it to Saint Patrick.^[4] It was also associated with Odran, a brother of Ciarán of Clonmacnoise (6th century). The 6th-century Saint Aedus (Aidus) transferred the bones of Brión mac Echach Muigmedóin to Roscam.^[5] It was attacked by Vikings in AD 807.^[6]

The round tower is dated to the 11th century and appears to have never been completed.^[7] The ruined tower once marked the limit of O'Halloran (Ó hAllmhuráin, Clann Fhearghaile) territory.^[8][9]

The church was built in the 15th century.^{[citation needed]}

Roscam is said to have been used as a duelling site in the medieval era; at the time, it was well outside of what was then the city of Galway and was easily accessible by boat.^[10]

There is a limestone round tower (11 m (36 ft) tall),^[11][12] bullauns and a church 22 m (72 ft) in length. The whole site is surrounded by a large enclosure.^[13]