Heraldic escutcheon of General George Monck, 1st Duke of Albemarle (1608-1670) of Potheridge in the parish of Merton, Devon. On external wall above north (Stevenstone) private doorway to north transept of parish church of St Giles-in-the-Wood, Devon, 3 miles north-east of Potheridge. Stone escutcheon sculpted in relief of four quarters: 1st: Gules, a chevron between three lion's heads erased argent (Monck); 2nd: quarterly of 4: 1:Royal Arms of England (Arms of King Edward IV); 2 & 3: Or a cross gules de Burgh; 4th: Mortimer; over-all a baton sinister (Arms of Arthur Plantagenet, 1st Viscount Lisle (the maternal grandfather of the Duke's grandfather Anthony Monck)) 3rd: Barry of six argent and azure in chief three torteaux a label of three points for difference (Grey, Viscount Lisle); 4th: Gules, a lion rampant within a bordure engrailed or (Talbot, Viscount Lisle); the whole circumscribed by the Garter. The arms of King Edward IV when Duke of York emphasise his descent from Lionel of Antwerp, 1st Duke of Clarence (1338–1368), third son of King Edward III (on which basis the House of York claimed the throne), who married Elizabeth de Burgh, 4th Countess of Ulster (1332–1363). Their daughter Philippa de Burgh married Edmund Mortimer, 3rd Earl of March, whose son Roger de Mortimer, 4th Earl of March, was the great-grandfather of King Edward IV; (Quarterly 1st: Arms of Edward IV; 2nd & 3rd: Or a cross gules (de Burgh), 4th: (Mortimer)) These arms were also borne by Arthur Plantagenet, 1st Viscount Lisle, KG, (died 1542), the illegitimate son of Edward IV The Duke's connection with this church, the parish church of the Rolle family of Stevenstone, is not clear. It is not known where his residence in Devon was, if any, whilst his mansion of Potheridge was being rebuilt on a grand scale after 1660
Elizabeth de Burgh, Duchess of Clarence, suo jure 4th Countess of Ulster and 5th Baroness of Connaught (6 July 1332 – 10 December 1363) was a Norman-Irish noblewoman who married Lionel of Antwerp, 1st Duke of Clarence.