It was created in 1675 by Charles II of England for Henry FitzRoy, his second illegitimate son by the Duchess of Cleveland.

[3] 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.

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.

The heir apparent is the present holder's son, Alfred James Charles FitzRoy, Earl of Euston (b.