How does this artwork elucidate its History?
Originally a badge held by John of Gaunt, 1st Duke of Lancaster during his 14th century tenure as steward/earl of the Honour of Richmond, it was the canine breed most favoured in Northern England.  This animal was further used for John of Lancaster, 1st Duke of Bedford and George Plantagenet, 1st Duke of Clarence and is supposed to stand for the honour, regardless of who has held or been in charge of it, although Peter II, Count of Savoy was not known to have any unique symbol to depict his stewardship of Richmond.  
Although they were legitimately entitled to the feudal estate, the badge was not used by any Duke of Brittany, preferring to use their traditional ermine until Francis II, Duke of Brittany willed Richmond to Henry VII of England—the chief representative of the House of Lancaster, which simultaneously legitimised the title to the Tudor dynasty and reversed the effect of the attainder made by Richard III of England as chief representative of the House of York and swung the loyalty of Richmondshire against the Ricardian regime, rolling back jure uxoris control through the marriages to Cecily Neville, Anne Neville and Isabella Neville, as descendants of the Nevilles who held Middleham.  Henry VII subsequently replaced the English lion with the White Greyhound, in the coat of arms of England, opposite the Y Ddraig Goch of Wales.
coat of arms of England Duke of Brittany John of Gaunt Honour of Richmond Y Ddraig Goch John of Lancaster, 1st Duke of Bedford George Plantagenet, 1st Duke of Clarence Henry VII of England House of Lancaster jure uxoris Anne Neville Isabella Neville Francis II, Duke of Brittany Middleham Northern England John of Gaunt, 1st Duke of Lancaster Richard III of England Cecily Neville House of York Tudor dynasty Peter II, Count of Savoy Richmondshire