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Books about Grellan:
The life of Saint Grellan, patron of the O'Kellys, and of the tribes of Hy-maine ... by John O'Hanlon (Sep 3, 2010)
The Life Of Saint Grellan: Patron Of The O'Kellys, And Of The Tribes Of Hy-Maine (1881) by John O'Hanlon (May 10, 2009)
The Life of Saint Grellan Patron of the
The Life Saint Grellan Patron of the Aunorrnn Tribes of Hy-Maine: Byte! Rev. John Ohanlon, Qnblint James Duffy... by John O'Hanlon (Jun 28, 2012)
Life of St. Grellan: Patron of Hy-Maine (in Connaught) by E Leahy (1901)
Wiki information Grellan:
Grellan Harty is a 2013 Shorty Awards nominee for the Best Overall Brand Presence on Facebook.