The “Celtic cross” is found in Irish stone sculptures, dating from the 5th Century; it is characterized by an annulet conjoined to the limbs. A similar motif (unblazoned) is found in the arms of Cardinal St. Marie, 1413 [Conz.Const. lxxi]. The Latinate form of Celtic cross, with the elongated lower limb, is the most common; the “equal-armed” form, with its ends potent, should be explicitly blazoned. These two forms are considered artistic variants; the heraldic difference is negligible. Celtic crosses made by adding an annulet to another type of cross (e.g., a “Celtic cross moline”) are considered a step from period practice. Modern depictions of the Celtic cross, where the annulet and cross are thin lines of equal width (like a gunsight) are not permitted.
Siobhan an Lochllanach bears: Sable, a Celtic cross argent atop a mount Or.
Etain ingen Ghilla Phatraic bears: Or, a Celtic cross per pale purpure and vert.
Morgana Swansdottir bears: Or, a Celtic cross equal armed, quarterly pierced and throughout vert.
Seamus Albanach Mac Roibeirt bears: Bendy sinister sable and argent, an equal-armed Celtic cross gules.