Also known as the Canon of Patrick, it contains some of the oldest surviving specimens of Old Irish.
Editors. "The Book of Armagh is written by Ferdomnach". The Literary Encyclopedia. First published 01 May 2009; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=6899, accessed 26 April 2015.]