about the time of the Battle of Crecy (1346) and the founding of the Order of the Garter (1348). The shape is therefore used in armorials from this "classical age" of heraldry. Beginning in the 15th century, and even more throughout the early modern period, a great variety of escutcheon shapes develops. In the Tudor era the heraldic escutcheon became more square, taking the shape of an inverted Tudor arch. Continental European designs frequently use the various forms used in jousting, which incorporate "mouths" used as lance rests into the shields; such escutcheons are known as à bouche. The mouth is correctly shown on the dexter side only, as jousting pitches were designed for right-handed knights. Heraldic examples of English shields à bouche can be seen in the spandrels of the trussed timber roof of Lincoln's Inn Hall, London. The shape of the top, the sides and the base may be separately described, and these elements may be freely combined. The highly complex Baroque style shields of the 17th century come in many artistic variations. Lozenge In English heraldry, the lozenge has been used by women since the 13th century for the display of their coats of arms instead of the escutcheon or shield, which are associated with warfare. In this case the lozenge is shown without crest or helm. For the practical purpose of categorisation the lozenge may be treated as a variety of heraldic escutcheon. Traditionally, very limited categories of females have been able to display their own arms, for example a female monarch—who uses an escutcheon as a military commander, not a lozenge—and suo jure peeresses, who may display their own arms alone on a lozenge even if married. In general a female was represented by her paternal arms impaled by the arms of her husband on an escutcheon as a form of marshalling. In modern Canadian heraldry, and certain other modern heraldic jurisdictions, women may be granted their own arms and display these on an escutcheon. Life peeresses in England display their arms on a lozenge. An oval or cartouche is occasionally also used instead of the lozenge for armigerous women. As a result of rulings of the English Kings of Arms dated 7 April 1995 and 6 November 1997, married women in England, Northern Ireland and Wales and in other countries recognising the jurisdiction of the College of Arms in London (such as New Zealand)