Argent, a blonde mermaid displayed proper between two flaunches azure, charged to dexter with a goblet and to sinister with a shamrock Or. Kathleen of Darkwater (2/1983 Meri)
Argent, a chevron throughout sable between two roses gules slipped and leaved and a shamrock vert. Rowan O'Flaherty (7/2003 Aten)
Argent, a domestic cat couchant guardant gules, in sinister chief a trefoil vert, a bordure wavy gules. Caìrech nic Amargein (2/1999 Meri)
Argent, a fess purpure between a dragon rampant contourny and a shamrock sable. Tuathflaith inghean ui Thighearnain (2/1999 Arte)
Argent, a fox passant contourny sable atop a base vert, in chief a trefoil slipped sable. Ailinn Shadowfox (2/1986 Aten)
Argent, a shamrock and on a chief wavy vert three hearts argent. Muirenn ingen Brain (11/2007 West)
Argent, a shamrock vert and on a chief azure a rose Or barbed vert. Rois inghean Domhnaill (8/2002 Outl)
Argent, a skull vert and on a chief sable a trefoil argent. Valamir of Mugmort (5/2009 Midd)
Argent, a swallow rising purpure, maintaining in its beak a shamrock vert. Moira MacDermott (12/1997 Trim)
Argent, a trefoil and a bordure gules. Clancy Fairchild of Ulster (12/2007 Drac)
Argent, a trefoil sable and a sinister gore counter-ermine. Jack Banyard (9/2002 Calo)
Argent, a trefoil slipped azure between in chief two crosses swallowtailed gules. Athelstan Saint Maur (6/1986 West)
Argent, a trefoil vert and on a chief embattled azure three crescents argent. Seamus Ó Domhnaill (9/2006 Caid)
Argent, in pale a trefoil vert and an anvil within a bordure embattled sable. Simkin Colfox (2/1997 Atla)
Argent, on a bend vert between two shamrocks vert, a shamrock palewise argent. Caitlin of Drogheda (8/1998 Trim)
Argent, on a double-headed eagle displayed quarterly gules and sable a trefoil argent a bordure quarterly sable and gules. Brian de Lacy (10/1997 Meri)
Argent, on a triskele vert a trefoil argent. Trimaris, Kingdom of (2/1996 Trim)
Argent, three hurts conjoined two and one each charged with a cross crosslet argent. Dugal Nauchti (3/2002 Caid)
Argent, two flaunches counter-ermine and in base a shamrock vert. Fáelán O Dálaigh (11/1991 AnTi)
Azure, a pale argent, in fess three trefoils slipped counterchanged. Klement St. Christoph (11/1985 West)
Azure, a stemless trefoil Or between each pair of leaves an oak leaf argent. Otto von Bismarck, Prince (12/1994 Laur)
Azure, a tree Or issuant from a mount argent charged with a trefoil knot azure. Anna Rayne (5/2009 Arte)
Azure, on a bend sinister between a trefoil and a fleur-de-lys argent a turtle's head bendwise sinister couped vert. Tonk O'Tuathail (4/1983 Midd)
Azure, on a chevron cotised argent five lozenges throughout palewise azure, in base a trefoil, on a chief argent three hurts. Sean Michael Reade (9/1994 Caid)
Azure, on a cross argent a trefoil vert, overall a bordure counterchanged. Yngvildr Ogursdóttir (9/2005 AnTi)
Azure, on a cross nowy cotised argent, a trefoil slipped vert. Klement St. Christoph (11/1985 West)
Azure, on a fess between a harp and a harp reversed Or a shamrock fesswise vert. Brian Ó hUilliam (1/2008 Anst)
Azure, on a fess Or between three Celtic crosses argent, a trefoil fesswise vert. Brian Ó hUilliam (1/2008 Anst)
Azure, three sea serpents ondoyant in pale, on a chief argent a shamrock vert between two thistles slipped and leaved proper. Seanán Ó Dáire (8/1997 Midd)
Ermine, a shamrock per pale azure and vert. Rose Bailie Marsh (5/2006G)
Ermine, a trefoil pierced between flaunches purpure the dexter charged with a decrescent and the sinister an increscent, within the horns of each a mullet argent. Tiernagh O'Mally (11/1997 Aten)
Ermine, in base a trefoil vert within a bordure vert semy of trefoils argent. Coley Cuthbert (5/1995 Midd)
Erminois, a saltire parted and fretted sable, overall a shamrock vert. Arthur O'Flaherty (2/2004 Aten)
(Fieldless) A rose Or slipped and leaved bendwise sinister surmounted on the slip by a shamrock vert. Rois inghean Domhnaill (8/2002 Outl)
(Fieldless) A shamrock gules. Rachele Cornelii (3/2010 Arte)
(Fieldless) A shamrock per pale azure and argent. Seamus McDaid (2/2008 Aten)
(Fieldless) A shamrock per pale vert and argent. Catriona Muireaghan of Carlingford (9/1991 Caid)
(Fieldless) A shamrock sable. Catlin Siobhán McNulty (5/1998 Midd)
(Fieldless) A shamrock sable charged with a triquetra Or. Conall mac Magnusa (5/2003 Aten)
(Fieldless) A shamrock vert crowned proper. Ireland (12/1994 Laur)
(Fieldless) A shamrock vert. Ireland (12/1994 Laur)
(Fieldless) A shamrock vert surmounted by a coney salient argent. Dathi O'Cooney (9/1990 Anst)
(Fieldless) A trefoil azure. Allan of Moffat (1/1997 Meri)
(Fieldless) A trefoil inverted vert. Gryffyn Dunham (8/1995 East)
(Fieldless) A trefoil per saltire Or and sable. Étaín du Pommier (8/2008 West)
(Fieldless) A trefoil purpure within and conjoined to a massacre sable. Aurnia of Carrigogunnel (4/1995 AnTi)
(Fieldless) A trefoil within and conjoined to an annulet argent. Tymothy John of Silver Oak (4/1991 Caid)
(Fieldless) On a card pique sable a trefoil Or. Ruaidhri MacMurrough (7/2003 Calo)
(Fieldless) On a natural tiger sejant contourny argent striped sable a shamrock gules. Eibhilín Núinnseann (10/2010G)
(Fieldless) On a shamrock Or a thistle proper. Maura MacPharlane (7/2000 Atla)
(Fieldless) On a shamrock vert a candle argent enflamed Or. Kiara Loftus (12/1998 Outl)
(Fieldless) On a shamrock vert, a compass star Or. Eógan Cú Chaille (1/1997 Caid)
(Fieldless) On a trefoil slipped vert three hearts bases to center argent. Bryan mac Dhughaill an Boghadair (5/2011 East)
(Fieldless) Three plates conjoined one and two. Sarra Peller (4/1999 AnTi)
(Fieldless) Three torteaux conjoined one and two. Anna Malakina (6/2001 AEth)
Gules, a pall between a trefoil and two pithons nowed erect respectant argent. Ceridwyn Nith of Cashel (3/1985 Midd)
Gules, in fess a trefoil slipped and three wolf's teeth issuant from sinister argent. Blaiddwyn, College of (11/2004 Outl)
Gules, on a bend sinister between a trefoil and a card-pique argent two hearts palewise alternating with two lozenges palewise gules. Marie Thérèse Normand (2/2004 Atla)
Gules, on a cross patée nowy throughout between in bend a mullet of eight points and a hammer and a sword crossed in saltire argent, a trefoil vert. James O'Neill (12/1980 East)
Gules, on a lozenge Or a trefoil azure all within a bordure wavy Or. Katherine of Sternfeld (9/1995 Midd)
Gules, on a shamrock argent a thistle proper. Cainder ingen Chonchobair (5/2010 AEth)
Gules, on a sun argent, a boar's head erased gules, on a base argent, a trefoil gules. Lachlan Tadhg (1/1989 West)
Or, a scarpe vert and a scarpe azure between a fleur-de-lys azure and a trefoil vert. Théophile de Jonchere (7/2000 Aten)
Or, a shamrock vert charged on each leaf with an arrow its point to center Or. David Lorkin O'Dea (10/2001 Meri)
Or, a thistle proper within an orle of shamrocks vert. Kathryn of Castelleone Nuovo (11/1999 Arte)
Or, a trefoil fesswise vert within a bordure azure. Brian Ó hUilliam (1/2008 Anst)
Or, a trefoil vert a chief flory-counterflory gules. Ciar de Burgo (8/2001 Meri)
Or, a trefoil within an annulet azure. Sile Pwyllog (7/1993 Calo)
Or, on a fess between three shamrocks vert, those in chief in chevron inverted, a shamrock Or. Brígh inghean uí Shéaghdha (3/2003 West)
Or, on a pale purpure endorsed vert a shamrock environed of a Bourchier knot palewise Or. Tighearnait ní Chearnaigh (9/1995 East)
Or, on a shamrock vert a mullet argent, a bordure sable. Bronach of Kildare (9/2009 Trim)
Or, on a shamrock vert a triquetra Or, on a chief sable two triquetras Or. Aubray inghean Fhearghaill (10/2005 Trim)
Pean, on a trefoil slipped Or, a lion rampant sable. Brian Angus McNamara (7/1984 East)
Per bend argent and vert, a bend purpure between a trefoil and a swan statant counterchanged. Sarra O'Shanan (8/2009 Calo)
Per bend argent and vert, a shamrock and a Celtic cross counterchanged. Pádraig Rúad Ó Maolagáin (4/2001 Anst)
Per bend dovetailed azure and argent, a trefoil and a rose counterchanged. Caroline O Cainnigh (9/1985 West)
Per bend Or and sable, a trefoil and a mace counterchanged. Artemisia, Kingdom of (11/2004 Arte)
Per bend sable and argent, a moon in her plenitude argent, and a shamrock vert. Arianwen ó Báire (5/1991 Anst)
Per bend sable and Or, a bend between a mallet and a shamrock counterchanged. Garfield av Kunningheim (8/1986 Caid)
Per bend sinister azure and argent, a thistle and a shamrock counterchanged. Maire Quinn (10/1992 Calo)
Per bend sinister nebuly vert and sable, a cross flory and a trefoil slipped Or. Alaric le Fevre (7/2004 Midd)
Per bend sinister Or and vert, a bendlet sinister between a trefoil and a sword, all counterchanged. Jökull landi Haraldsson (8/2008 Atla)
Per bend sinister sable and Or, a shamrock counterchanged. Olaf of Blackhawk (4/2000 Midd)
Per bend sinister vert and argent, a bend sinister engrailed between a Fidelis knot and a shamrock counterchanged. Ceara of Armorica (7/1993 Aten)
Per bend sinister vert and azure, a bend sinister Or between a phoenix and a trefoil argent. John mac Ailbhe of Vulpine Reach (5/2010 Meri)
Per bend sinister vert and ermine, a sea-lion erect and in canton a trefoil argent. Elizabeth Hollingsworth (8/1997 Drac)
Per bend sinister vert and Or, a bend sinister enarched argent between a cross of Cleves and a shamrock counterchanged. Kathelyne de Leycester (10/2001 Meri)
Per bend sinister vert and Or, a harp reversed and a trefoil, a bordure counterchanged. Siobhan of Cork (7/2005 Aten)
Per bend vert and argent, a stag springing and a trefoil bendwise counterchanged. Ciarán Dúin Rúaidh (1/1997 Caid)
Per bend vert and purpure, a griffin rampant argent charged on the shoulder with a trefoil inverted vert. Gryffyn Dunham (8/1995 East)
Per chevron argent and purpure, two crosses pommy fitchy gules and a trefoil slipped argent. Tomas mac Torcail an Sligeach (11/1986 Meri)
Per chevron embattled vert and Or, two harps and a shamrock counterchanged. Padraig Guinness of County Down (11/1991 Aten)
Per chevron inverted sable and chequy sable and argent, in chief a trefoil within and conjoined to an annulet argent. Joseph of Silver Oak (7/1989 Caid)
Per chevron Or and vert, a chevron ermine between two thistles, slipped and leaved, vert and a trefoil slipped Or. Duncan MacDhai of Roxburg (12/1989 Meri)
Per chevron vert and argent, two mullets and a shamrock a bordure engrailed counterchanged. Patrick O'Reilly the Tall (2/1995 Atla)
Per fess embattled azure and argent, two triquetras Or and a shamrock bendwise sinister vert. Marcán Riney (10/2003 Calo)
Per fess indented azure and sable, on a demi-bezant issuant from the line of division, a trefoil slipped vert. Laura of the Elmwood (10/1992 Aten)
Per fess wavy vert and argent, two mullets of four points and a shamrock counterchanged. Faílenn ingen Murchada (12/2004 Trim)
Per pale argent and azure, a shamrock counterchanged. Seamus McDaid (1/2002 Aten)
Per pale Or and gules, a trefoil double-slipped counterchanged. Sesildi Garces de Leon (4/2003 Trim)
Per pale Or and vert, a shamrock within a bordure embattled counterchanged. Amy Davenport (9/2009 AEth)
Per pale sable and Or, a trefoil counterchanged. Maryan Blacke of York (8/2002 Drac)
Per pale vert and argent, a trefoil slipped counterchanged. Gee Makbrair (1/1996 Atla)
Per pale vert and argent, on a chess rook a shamrock counterchanged. Étaín O'Rowarke (1/2002 Anst)
Per pale vert and Or, a trefoil counterchanged. Trahaearn O Connachtaigh (11/1995 Caid)
Quarterly argent and azure, a trefoil, a bordure vert. Eibhlín ní Ghallchobair (5/1998 AEth)
Quarterly gules and sable, on a cross nowy Or a shamrock vert, a bordure Or. Madoc ap Meurig (9/2004 Meri)
Quarterly Or and argent, a trefoil vert, a bordure azure. Órlaith inghean Néill Mhóir uí Cheallacháin (11/2005 West)
Quarterly vert and argent, on a shamrock counterchanged a garden rose Or. Leonore Aid-an (4/1981 Aten)
Sable, a chevron argent surmounted by a scorpion Or, and in base a trefoil argent. al-Barran, Barony of (7/1994 Outl)
Sable, a dove ascending within a mascle between in chief two trefoils Or. Constanza di Giovanni (12/1984 Meri)
Sable, a red-haired female savage proper, above its dexter palm a trefoil, between two flaunches argent each charged with a goblet sable. Taliesin O Sionnaigh o Pholl na tSionnaigh (6/1990 Anst)
Sable, a shamrock vert fimbriated, surmounted by a horse salient, all within a bordure argent. Colleen Ahern (8/1981 Meri)
Sable, a trefoil within and conjoined at the base to an annulet all within a double-tressure Or. Dinaris the Wanderer (6/1986 Anst)
Sable, centered upon a Latin cross engrailed Or a shamrock slipped vert. Bradford of Green Meadow (1/1973)
Sable, in pale a trefoil within and conjoined in base to an annulet argent and a lion contourny Or on a chief argent three increscents gules. Colin Vargus O'Connor (6/1997 Caid)
Sable, on a chevron Or a card pique sable, a lozenge gules, a trefoil sable, and a heart gules, and in chief an owl displayed argent. Ruaidhri O'Flionn (8/1982 East)
Sable, on a sun Or a shamrock sable, a bordure embattled argent. Gillian Elphinstone (7/1991 Calo)
Sable, two scarpes between a trefoil and a crescent Or. Celine Vita da Francavilla (2/1997 Aten)
Vert, a falcon displayed Or, charged upon the breast with a trefoil vert, within a bordure engrailed argent. Ceinwen Haele Cynwyth (11/1984 Caid)
Vert, a griffin segreant Or maintaining a trefoil argent and on a chief Or three hearts sable. Padraig Gliadrach Ó Ceallaigh (9/1996 Drac)
Vert, a horse's head couped argent charged on the neck with a shamrock purpure. Hedvig Kettuin (9/1996 Drac)
Vert, a lion rampant Or, a bordure Or semy of shamrocks vert. Deirdre of Kerry (7/1997 Aten)
Vert, a shamrock and a bordure engrailed argent. Morin inghean ui Mhuirneachain (5/2005 AnTi)
Vert, a shamrock Or surmounted by a harp sable, in base a chevronel and a chief Or. Kyla Maire Reynolds of Galloway (8/1980 Anst)
Vert, in pale a trefoil Or between two fleurs-de-lys argent. Marie d'Andelis (1/2010 Atla)
Vert, on a cowbell argent a shamrock vert and on a chief argent a glaive sable. Cáelán mac Domhnaill (10/2007G)
Vert, on a cross nowy Or a shamrock vert. Padraighcine Ó hUrthile (3/1981 Aten)
Vert, on a drinking horn Or a shamrock vert. Kristin Ailbe Anmclaid (6/2001 Atla)