I was in Ireland last month and took a picture of this monument at the Burrishoole Friary in County Mayo, Ireland. It is very difficult to decipher but I believe it says Margaret _____ (appears to be Cary or Gary) alias Kus.
You can find it here:
http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=11...Sincerely
Cheryl L. Dieter