8Hicks, Ronald. "The Sacred Landscape of Ancient Ireland." Archaeology 64.3 (2011): 40-45.
From Wikipedia: "The literary corpus of the dindsenchas comprises about 176 poems plus a number of prose commentaries and independent prose tales (the so-called "prose dindsenchas" is often distinguished from the "verse", "poetic" or "metrical dindsenchas"). As a compilation the dindsenchas has survived in two different recensions. The first recension is found in the Book of Leinster, a manuscript of the 12th century, with partial survivals in a number of other manuscript sources. The text shows signs of having been compiled from a number of provincial sources and the earliest poems date from at least the 11th century. The second recension survives more or less intact in thirteen different manuscripts, mostly dating from the 14th and 15th centuries."