Dear Listers, Could any of you explain what the letter's A R P and the number's under them mean? I have an Ordinance Survey Map (c1846) of a townland in Wexford. I found my ancestor's name on Griffith's Val, giving the letters ARP with numbers refering to the location of his property on the OS map. I haven't a clue how to find his land. Thank you, Beth McBride Illinois