The two main devices (symbols) in the Merill blazon are the cross crosslet and crescent. The two main tinctures (colors) are or and gules.
The bright yellow colour frequently found in coats of arms is known to heralds as Or, or sometimes simply as Gold.1Boutell’s Heraldry, J.P. Brooke-Little, Warne, (revised Edition) London 1970, P 27. Along with, argent, or silver it forms the two “metals” of heraldry – one of the guidelines of heraldic design is that silver objects should not be placed upon gold fields and vice versa 2A Complete Guide to Heraldry, A.C. Fox-Davies, Bonanza (re-print of 1909 Edition), New York, 1978, P85. The yellow colour is often associated with the Sun, and the zodiacal sign of Leo.3Understanding Signs & Symbols – Heraldry, S. Oliver & G. Croton, Quantum, London, 2013, P53.
Gules, the heraldic colour red is very popular, sometimes said to represent “Military Fortitude and Magnanimity”4The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P36. It is usually abbreviated as gu and in the days before colour printing was shown in a system known as hatching by vertical lines 5Understanding Signs & Symbols – Heraldry, S. Oliver & G. Croton, Quantum, London, 2013, P52. Although it may look like a French word it is normally pronounced with a hard “g” and may be derived either from the Latin gula (throat) or Arabic gule (rose).6A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1847, P154
No other symbol appearing in heraldry is subject to as much variation as the cross 7Boutell’s Heraldry, J.P. Brooke-Little, Warne, (revised Edition) London 1970, P 47. Mediaeval Europe was a deeply religious and Christian and many of the nobility wanted to show their devotion by adopting the symbol of the cross as part of the arms. Since no two arms could be identical there arose many variants of the cross. The cross crosslet is one of these, being symetrical both vertically and horizontally and having an additional cross bar on each arm. 8A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Cross Crosslet Wade suggests that these additional crossing signify “the fourfold mystery of the Cross”. 9The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P103
For easy recognition of the items on a coat of arms, and hence the quick identification of the owner, bold simple shapes are best. Hence, simple geometric shapes are often used for this purpose 10A Complete Guide to Heraldry, A.C. Fox-Davies, Bonanza (re-print of 1909 Edition), New York, 1978, P146xz`, and the crescent Is a typical example of this, and can appear in any of the main heraldic tinctures. Some common is this device that there are special names for its appearance in various orientations – whilst it lies normally with points upward, the decrescent points to the sinister side, and the increscent to the dexter 11A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Moon. The allusion, obviously is to the shape of the moon in the sky (indeed, the French have a version “figuré” which includes a face!) and has been said to signify both “honour by the sovereign” and “hope of greater glory” 12The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P106.