Quarterly: 1st and 4th, France and England quarterly (Royal Arms of Charles II); 2nd, Scotland; 3rd, Ireland; the whole debruised by a baton sinister compony of six pieces argent and azure.
The Duke of Grafton holds three subsidiary titles, all created in 1675 in the peerage of England: Earl of Euston, Viscount Ipswich, and Baron Sudbury.[1] Between 1723 and 1936 the dukes, being descended from the 1st Duke's wife Isabella FitzRoy, 2nd Countess of Arlington, also held the titles Earl of Arlington, Viscount Thetford and Baron Arlington. Those titles fell into abeyance between the 9th Duke's sisters,[4] with the abeyance of the barony of Arlington being ended in 1999.
The Dukes "created" and owned the London district of Fitzrovia, so named for their family name.
The family seat is Euston Hall in Suffolk, an 11,000-acre estate straddling the Norfolk-Suffolk border.[5] The main burial places of the senior branch of the family are in and beside the parish church of Saint Genevieve at Euston, Suffolk.
On a Chapeau Gules turned up Ermine a Lion statant guardant Or ducally crowned Azure and gorged with a Collar counter-compony Argent and of the fourth.
Escutcheon
The Royal Arms of Charles II, viz Quarterly: 1st and 4th, France and England quarterly; 2nd, Scotland; 3rd, Ireland; the whole debruised by a Baton sinister compony of six pieces Argent and Azure
Supporters
Dexter: a Lion guardant Or ducally crowned Azure; Sinister: a Greyhound Argent, each gorged with a Collar counter-compony Argent and Azure.
Motto
Et Decus Et Pretium Recti (The ornament and recompense of virtue)