The "cross potent" shape is found in pottery decorations in both the European and the Chinese Neolithic. In
Chinese bronze inscriptions, the glyph ancestral to the modern Chinese character "
shaman, witch" has the shape of a cross potent, interpreted as representing a cross-like "divining rod" or similar device used in shamanistic practice. The cross potent as a
Christian cross variant is used on Byzantine coins of the 7th century, under the
Heraclian dynasty, mostly as a "Calvary cross potent", i.e. a cross potent standing on a number of steps. A
Tremissis of Heraclius, dated c. 610–613, also shows the cross potent without the steps. A cross potent, or
cross patty, is already shown on a Tremissis of
Theodosius II (first half of the 5th century). File:Tremisse di teodosio II, 402-450 dc, costantinopoli.jpg|Tremissis minted under Theodosius II (r. 402–450) File:Tremissis - Visigoti per Maggioriano - RIC X 3747-9.jpg|Visigothic tremissis (5th century) File:Impero romano d'oriente, eraclio con eraclio costantino, emissione aurea, 613-638, 02.JPG|Calvary cross potent minted under Heraclius (c. 613–638) File:Solidus Tiberius Petasius.jpg|Calvary cross potent on a solidus minted under
Tiberius Petasius (c. 730) Early
heraldic crosses are drawn to the edges of the shield, as
ordinaries, but variations in the termination of the cross limbs become current by the later 13th century. The heraldic cross potent is found in armorials of the late 13th century, notably in the coat of arms of the
Kingdom of Jerusalem,
argent, a cross potent between four plain crosslets or (
Camden Roll, c. 1280). Use of the cross potent remains rare in heraldry outside of the Jerusalem cross. In medieval heraldry, as in medieval seals, the distinction between the cross potent and the
cross patty may be unclear. For example, the cross patty of the
Teutonic Order is drawn as a cross patent for
Tannhäuser in
Codex Manesse (c. 1310). Use of the
Jerusalem cross is associated with the title of
King of Jerusalem which passed from the
kings of Cyprus to a number of royal houses of Europe in the late medieval period, notably the
kings of Naples and the
House of Savoy, via
Louis II of Naples to the
House of Lorraine, via conquest of Naples to the
House of Aragon, and via
Francis I to the Habsburg
Emperors of Austria. A simple cross potent is used as the arms of northern
Calabria (
Calabria Citra) as a province of the
Kingdom of Naples in the early modern period (
Ferdinand, Duke of Calabria). File:Escudo Juana-Carlos I.jpg|Cross potent on an
escudo minted under
Charles V (r. 1519–1556) File:Fronton Cathédrale Saint-Pierre Genève.jpg|
rinceau cross potent at a side entrance of
St. Pierre Cathedral (18th century) Use of the cross potent in heraldry is revived in the 19th to early 20th century, and then as an emblem for
Roman Catholicism directly based on the Jerusalem cross. ==Modern use==