Dimensions: Arms Per pale azure and gules three lions rampant argent Crest A wyvern wings elevated holding in its mouth a sinister hand Supporters dexter an heraldic panther ducally gorged sinister a lion ducally gorged Motto UNG JE SERVIRAI Coronet of an Earl
Davenport identifies these stamps as those of Marcus Trevor 1st Viscount Dungannon. Both arms and crest belonged to the Welsh hero Tudor Trevor, and are used by his descendants. Because surnames are a recent introduction in Wales, various branches of the family have different surnames.
For the lion rampant Papworth's Ordinary lists a good number, of possibilities, among them Davies of London and Shropshire, Davis of Denbighshire and Dymock of Warwickshire, granted in 1581, and Dymock of Penley Hall in Flintshire.
For the wyvern crest Papworth gives the following: Drake, Ashe and Withercomb, Devon; Drake, Hardley, Norfolk; Davith. The initials I D would fit any of these families. That of the Viscounts Dungannon do not offer anyone whose name began with I or J.
Dimensions: Arms Quarterly 1. Two bars (Venables) 2. A fret (Vernon of Haddon) 3. A fess (Vernon of Shipbrook) 4. Checky on a canton a lion rampant (Warren of Poynton) Supporters Dexter A lion collared and chained and Sinister A boar ducally gorged and chained Crests 1. A wyvern standing on a fish weir or trap devouring an infant and pierced through the body with an arrow (Venables) 2. A boar's head erased ducally gorged (Vernon) Helmet of a peer Coronet of a Baron Motto •vernon••semper••viret
Dimensions: Arms Quarterly 1. Two bars (Venables) 2. A fret (Vernon of Haddon) 3. A fess (Vernon of Shipbrook) 4. Checky on a canton a lion rampant (Warren of Poynton) Supporters Dexter A lion collared and chained and Sinister A boar ducally gorged and chained Crests 1. A wyvern standing on a fish weir or trap devouring an infant and pierced through the body with an arrow (Venables) 2. A boar's head erased ducally gorged (Vernon) Helmet of a peer Coronet of a Baron Motto •vernon••semper••viret
Dimensions: Arms Quarterly 1 & 4. A fess between three sheldrakes (Sheldon) 2. On a bend between two lions rampant a wyvern extended (Rudinge) 3. A saltire vair (Willington)