For those who want more on this topic, you will want to read Early Irish Farming by Fergus Kelly (http://www.worldcat.org/oclc/462769441 http://www.worldcat.org

For those who want more on this topic, you will want to read Early Irish Farming by Fergus Kelly (http://www.worldcat.org/oclc/462769441 http://www.worldcat.org/oclc/462769441) and Early Medieval Ireland, AD 400-1100 by Aidan O'Sullivan, et al. (http://www.worldcat.org/oclc/1257790078 http://www.worldcat.org/oclc/1257790078).