Devereux was killed at the Battle of Bosworth in 1485, fighting on the side of King Henry VII.

He was succeeded by his son, the ninth Baron, who served with distinction in the French Wars of King Henry VIII and was honoured in 1550 when he was created Viscount Hereford in the Peerage of England.

This latter Walter Devereux was also a prominent soldier during the reign of Queen Elizabeth I. Lord Hereford was a Field Marshal[citation needed] of the forces sent to quell the Northern Rebellion of 1569 and led an expedition to occupy Ulster in 1573.

He died on 14 September 1646 and was buried in Westminster Abbey on the 19 October, both Houses of Parliament attending the funeral.

He died childless at an early age and was succeeded by his second cousin once removed, the ninth Viscount.

He was the great-grandson of Sir George Devereux, brother of the fifth Viscount, and had served as Member of Parliament for Montgomery prior to his succession in 1700.

He was childless and on his death in 1783 the titles passed to his younger brother, the 13th Viscount, who moved the principal Welsh seat of the viscountcy from Montgomeryshire to Pencoyd in Herefordshire.

The 18th Viscount instead chose to make his home at Haseley Court, Oxfordshire, which he relinquished in 1982, when he settled at Lyford Cay, near Nassau, in the Bahamas.

The Devereux baronetcy, of Castle Bromwich in the County of Warwick, was created in the Baronetage of England in 1611 for the Hon.

Edward Devereux, seated at Castle Bromwich Hall, landowner and the fourth son of the first Viscount Hereford.