The two main devices (symbols) in the Janson blazon are the cross patonce and hind. The two main tinctures (colors) are vert and gules.
The deep green colour that is so often observed in heraldry is more properly known as vert. According to Wade, the use of this colour signifies “Hope and Joy”, but may also represent, rather delightfully, “Loyalty in Love” 1The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P36. It has other names also, the French call it sinople, perhaps after a town in Asia Minor from where the best green die materials could be found 2A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Vert. More fanciful heralds liked to associate it with the planet venus and the precious stone emerald 3Boutell’s Heraldry, J.P. Brooke-Little, Warne, (revised Edition) London 1970, P 27. More strangely, there is some evidence that the term prasin was anciently used, being the Greek for the vegetable we call the Leek!
Red in heraldry is given the name Gules, sometimes said to be the “martyr’s colour”4The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P36. The colour is also associated with Mars, the red planet, and the zodiacal sign Aries 5Understanding Signs & Symbols – Heraldry, S. Oliver & G. Croton, Quantum, London, 2013, P53. Later heralds of a more poetical nature would sometimes refer to the colour as ruby, after the precious stone.6A Complete Guide to Heraldry, A.C. Fox-Davies, Bonanza (re-print of 1909 Edition), New York, 1978, P77.
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, typically involving patterning along the edges 8Understanding Signs & Symbols – Heraldry, S. Oliver & G. Croton, Quantum, London, 2013, P67, or fanciful, decorative endings to the arms of the cross 9A Complete Guide to Heraldry, A.C. Fox-Davies, Bonanza (re-print of 1909 Edition), New York, 1978, P128. The cross patonce is typical of these, whereby each arm of the cross expands and ends in a bud-like projection. These cross variations are probably largely for decorative effect, and to differentiate the arms from similar ones and hence their significance is that of the Christian cross itself.
Many different forms of the deer, hart, roe-buck and other appear in rolls of arms, though often of similar appearance. The precise choice of animal possibly being a reference to the family name. 10A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Deer If there is any symbology intended it is probably that of enjoyment of the hunt, deer in all its form being a popular prey. 11The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P30