Possibly William Henry Edgcumbe, 4th Earl of Mount Edgcumbe; Caroline Augusta Edgcumbe (née Feilding), Countess of Mount Edgcumbe when Viscountess Valletort

by William Henry Mote, published by Longman & Co, published by Appleton & Co, after J. Ross
stipple engraving, published 1839
NPG D38530