The armiger, Séamus ÓhEarcáin – James J. Harkins IV (born 1935), is the eldest son of James Joseph Harkins of Tamhnach an tSalainn barony of Banagh in Tír Chonáill, and Caitlin Theresa, nee Clerkin [ÓCleireacháin] of Rockcorry barony of Cremorne, Breffny. He is an internationally noted Irish historian, author, lecturer, and world traveller dividing his time between Ireland, Germany and the United States of America; he holds both US and Irish citizenships. The armiger successful career spans service in military, industry, academia and public life and reflects his varied disciplines. An elected life member of the Donegal Historical Society; he was the founder and organizer of The Florida Catholic Heritage Trail (el Camino de la Herencia Católica en la Florida) a bi-lingual endeavour that documented how the Catholic Church was a significant and positive force in the 500 year history of that state. The President of the Florida Senate appointed him to serve on the State Elderly Affairs Advisory Council. He served as Trustee of the Tampa Bay History Centre, the Hillsborough County Historical Review, and County Public Library Board. He is the founder of the SouthShore Round Table a public forum that gives political voice to Hillsborough citizens. In recognition of his many years of service to the public the Hillsborough County Commission of Florida dedicated a regional public library courtyard as the: James J. Harkins IV Plaza. The armiger is a Knight of Columbus and the Ancient Order of Hibernians of America serving as Florida State Historian and represented the Order in Ireland. He is a member of the Military History Society of Ireland.
The armiger is married to Christa Marta Lilli nee Thünken of Fulda, Germany; they have three children: James Joseph V (born 1970), Commander, USCG; René Erich; and, Gail Sharon; and. have six grandchildren and one great-grandchild.