English: Arms of Mount Grace Charterhouse, founded in 1398 by Thomas Holland, 1st Duke of Surrey, 3rd Earl of Kent (1372-1400), eldest son of Thomas Holland, 2nd Earl of Kent, a uterine half-brother of King Richard II: Quarterly of 4:

• 1&4: Attributed arms of King Edward the Confessor differenced by a bordure ermine; King Richard II adopted as his arms the attributed arms of King Edward the Confessor impaling the royal arms of England (see e.g. the Wilton Diptych);
• 2&3: Arms of Thomas Holland, 1st Duke of Surrey, 3rd Earl of Kent: Royal arms of Edmund of Woodstock, 1st Earl of Kent (6th son of King Edward I by his 2nd wife Margaret of France), being the Royal arms of King Edward I differenced by a bordure argent. The maternal grandmother of Thomas Holland, 1st Duke of Surrey, 3rd Earl of Kent was Joan Plantagenet, the "Fair Maid of Kent", daughter and sole heiress of Edmund of Woodstock. She married Thomas Holland, 1st Earl of Kent, who was granted the arms of his father-in-law Edmund of Woodstock.