117. _Cornish Arms and Cornish Motto._--The Cornish arms are a field
sable with fifteen _bezants_, not _balls_ as they are commonly called,
5. 4. 3. 2. 1. in pale _or_. These arms were borne by Condurus, the last
Earl of Cornwall of British blood, in the time of William I., and were
so borne until Richard, Earl of Cornwall, on being created Earl of
Poictou, took the arms of such. According to the custom of the French,
these were a rampant lion _gules_ crowned _or_, in a field _argent_; but
to show forth Cornwall, he threw the fifteen _bezants_ into a bordour
_sable_, round the bearing of the Earl of Poictou; but the Cornish arms,
those of Condurus, are unaltered, though the _coins_ are often mistaken
for balls, and painted on a field coloured to the painter's fancy. Can
you tell me when the Cornish motto "one and all" was adopted, and why?