In English, Scottish and Northern Irish heraldry, a woman may bear arms by inheritance from her father[4] or by grant to herself. When unmarried, she displays her arms on a lozenge (a diamond shape) or on an oval or oval-like shape. Traditionally, a woman does not display her arms on a shield, as the shield originated with knights and warfare, and is thus viewed as fitting for a man, but not a woman.[citation needed] Recently though, some armigerous women have chosen to break with tradition display their arms using a shield.[citation needed]
The arms of the Duchess of Cambridge (right) impaled with those of her husband, Prince William, Duke of Cambridge (left)
When married, a woman has the option of uniting her arms with those of her husband in what are called marital arms; their arms are impaled, meaning they are placed side by side in the same shield, with those of the man on the dexter (left, as seen from the front) and those of his wife on the sinister (right, as seen from the front).[5] If one spouse belongs to the higher ranks of an order of chivalry, and is thereby entitled to surround his or her arms with a circlet of the order, it is usual to depict them on two separate shields tilted towards one another, this is termed "accollé".[citation needed]
Coat of Arms of Birgitte, Duchess of Gloucester who is a heraldic heiress. Depicting her father's arms imposed over those of Prince Richard, Duke of Gloucester, her husband.
Married woman may also bear either her own arms or her husband's arms alone on a shield with a small differencing mark to distinguish her from her father or husband.[citation needed]
Heraldic Heiresses
If the woman is an heraldic heiress, her arms are shown on an inescutcheon of pretence, which is a small shield in the centre of her husband's arms. When widowed, a woman continues to use her marital arms, but placed on a lozenge or oval.[citation needed] In England and Northern Ireland, if there is more than one surviving daughter, each transmits her father's arms on equal terms.[6] In Scotland however, only the eldest surviving daughter transmits her father's undifferenced arms to her offspring.[7]