First, there is no such thing as a "Fagan family coat of arms." According to experts in Heraldry, "Arms" were (and are) granted to individuals (and their direct descendants). Patrick O'Shea, one such expert, writes, "Most of these examples of armorial bearings originated as English Grants of Arms in the late Medieval or early Renaissance periods. Today the regulation of armorial bearings in Ireland is handled by the Chief Herald of Ireland or the U.K. College of Arms (in Northern Ireland), and both authorities continue to make new grants of arms to worthy individuals".

According to Burke's Peerage & Gentry, This Coat of Arms was issued to Thomas Fagan of Dublin and is recorded as:
"The pedigree entered in the Visitation of Dublin, 1605, by Daniel Molyneux, Ulster King of Arms, commences with THOMAS FAGAN, of Dublin; m 1524, Amy Nangle, dau of the Baron of Navan, and by her acquired large estates in Dublin and elsewhere. He left issue, two sons,

• 1a - Christopher, Mayor of Dublin 1573, High Sheriff 1565; m Joan, dau of Sir James FitzSimons, Mayor of Dublin, and had, with seven daus., an only s, Thomas, of Castle Fagan and Palmerston, Co Dublin (will 10 July, 1599), who left an only child Elinor; m her cousin Richard Fagan, of Feltrim.
• 2a RICHARD, of whom we treat.

WILLIAM CHARLES (TRANT) FAGAN, is the present male representative of the family of Fagan of Feltrim; b 3 Jan 1877"

Fagan: Arms; Per chevron gules and erm. in chief three covered cups or. Crest; A griffin argent, winged and tufted or supporting in the talons an olive branch vert, fructed gold. Motto; Deo patriaeuqe fidelis.

Unless you are the direct descendant of this individual with proof of inheritance, simply "being a Fagan" does not mean you can bear the arms shown - it belongs to William Charles (Trant) Fagan and/or his descendants.

The Association of the Fagan Tribes has established its own Coat of Arms and Badge for the use of all of its Registered Members:

This certifies that the heraldic arms of the Fagan Clans Association are registered as an original design and are described by the blazon below: