Among his siblings, who were later granted the rank of earl's children, Lady Dorothy Marguerite Elizabeth Herbert (wife of Hon.
Robert Hepburn-Stuart-Forbes-Trefusis, son of Charles Hepburn-Stuart-Forbes-Trefusis, 20th Baron Clinton), Lady Phyllis Hedworth Camilla Herbert (wife of Martin Drummond Vesey Holt of Holt's Military Banking family), and Christian Victor Charles Herbert (later the 6th Earl of Powis).
He was awarded the Territorial Decoration and was appointed Commander of the Most Venerable Order of the Hospital of St. John of Jerusalem.
[1] Herbert gained the rank of Lieutenant-Colonel in 1939 in the King's Shropshire Light Infantry and fought in World War II.
[4] The family heirlooms included 83 paintings, some by Sir Joshua Reynolds and Thomas Gainsborough, 25 statues, and 13 tapestries.