The castle is a national monument in state ownership and is located in the townland of Abbeville near to Lorrha in County Tipperary, Ireland.

An Irish illuminated manuscript written mainly in Latin with some Gaelic in the late eighth or early ninth century, probably after 792.

In the mid-11th century it was annotated and some pages rewritten at Lorrha Monastery.

When the collection was bought by the nation in 1883, it and the other Irish manuscripts were handed over to the Royal Irish Academy in Dublin, where it remains, catalogued as MS D II 3.

[3] The cumdach or reliquary case which up to this point had survived together with the book was later transferred, with the rest of the Academy's collection of antiquities, to the National Museum of Ireland (museum number 1883, 614a).