Editing Cross (Heraldic Charge)

http://heraldry.sca.org/loar/2020/11/20-11cl.html#6

Celtic crosses are allowed in SCA armory because they are artifacts found in Great Britain and Ireland. However, they have been poorly defined in the past, which has led to a number of different depictions of both equal-armed and Latin Celtic crosses. This loose definition has left submitters vulnerable to depicting non-documentable versions of the Celtic cross, including the "gunsight" version discussed earlier in this Cover Letter. In order to bring our understanding of Celtic crosses into line with period practice and SENA, the charge needs a tighter definition.

The closest version of a Celtic cross yet found in period heraldry are the arms of Moresini, c. 1550: Or, a bend azure, overall a cross throughout interlaced with an annulet argent in Insignia Venetorum nobilium III (IP-Z) (BSB Cod.icon 273, 48r). A similar set of arms borne by Cardinal St. Marie found in the Chronicle of the Council of Constance, 1413, is cited by Bruce Batonvert in the Pictorial Dictionary of Heraldry; it differs from Moresini only in that the cross throughout has potent terminals at the edges of the shield. It is from these designs that we get the Cross of Coldharbour (now a banned motif for offense; see earlier in this Cover Letter) and the potent-ended Celtic cross as described in the Pictorial Dictionary. However, the documentable period motif is not a single charge, but two: a cross throughout potent (functioning as an ordinary) interlaced with an annulet. Said motif is registerable, but moving forward it will be blazoned and treated as two separate charges (ordinary and annulet) in the same primary or overall charge group.

https://heraldry.sca.org/loar/2018/07/18-07cl.html#2