English: Lozenge of arms of The 1st Viscountess Daventry (Muriel Douglas-Pennant, elder daughter of Lt Col Hon Archibald Charles Henry Douglas-Pennant, second son of Edward Douglas-Pennant, 1st Baron Penrhyn). Quarterly of 4:
1st & 4th: Per bend sinister ermine and ermines, a lion rampant or (Trevor) a canton sable for difference (Pennant); the Pennant family of Downing and Bychton in Flintshire, Wales, was descended from (or otherwise connected with) Tudor Trevor, a chieftan of the Marches of Wales (Burke, Sir Bernard, The General Armory, London, 1884 , pp. 789, 316 (re Edwards, same arms, also descended from Tudor Trevor) and bore the same arms.
2nd & 3rd: Quarterly 1st & 4th Argent a man’s heart Gules ensigned with an Imperial crown Proper on a chief Azure three mullets of the field; 2nd & 3rd Argent three piles Gules on the two outer ones a mullet of the field (Douglas)