Fox-Davies bore the Davies arms with a crescent for cadency, and intended to quarter them with the Fox arms after his mother's death; but as she outlived him, dying in 1937, this was not possible. He also considered obtaining grants to his wife's families of Crookes and Proctor, which would entitled his children to additional quarterings, but at this point he no longer had the money for further grants of arms. He did obtain, in 1921, the grant of a badge, which consisted of a "crown vallary gules". His motto was "Da Fydd", Welsh for "good faith" and a pun on the name Davies.