Wyvern folklore is rarely fire-breathing like the four-legged dragon. Sometimes modern fantasy book and media authors have wyverns that are frost-breathing or poison-breathing instead of fire-breathing. The current spelling "wyvern" is not attested before the seventeenth century as "winged two-footed dragon". According to the Oxford English Dictionary, it is an alteration of Middle English "wyver" (attested thirteenth century), from Anglo-French "wivre" (cf. French "guivre" and "vouivre"), which originate from Latin "vīpera", meaning "viper", "adder", or "asp". Conversely, medievalist William Sayers proposes a more complex origin for the term. He notes that the Anglo-French "guivre" and its Middle English derivative ceased to
Women in heraldry on a lozenge or oval. In England and Northern Ireland, if there is more than one surviving daughter, each transmits her father's arms on equal terms. In Scotland however, only the eldest surviving daughter transmits her father's undifferenced arms to her offspring. In Canadian heraldry, women and men are treated equally for heraldic purpose, reflecting Canadian equality laws. It is therefore common to display the arms of women on shields, rather than on a lozenge or oval, but a woman may still choose to have her arms displayed on a traditional shape. In many systems of heraldry, the arms of