Baron Arundell of Wardour, in the County of Wiltshire, was a title in the Peerage of England. It was created in 1605 for Thomas Arundell, known as "Thomas the Valiant", son of Sir Matthew Arundell (died 1598) and grandson of Sir Thomas Arundell (executed 1552) and of Margaret Howard, a sister of Queen Catherine Howard. Arundell had already been created a Count of the Holy Roman Empire by Rudolph II in December 1595 (see below). He was succeeded by his son, the second Baron. He fought as a Royalist in the Civil War and was mortally wounded at the Battle of Stratton in 1643. His son, the third Baron, was implicated in the Popish Plot and imprisoned in the Tower of London for six years. However, after the accession of James II he was restored to favour and served as Lord Privy Seal from 1687 to 1688. His great-great-great-grandson, the eighth Baron (the title having descended from father to son), was an avid collector of art and accumulated immense debts in building and furnishing New Wardour Castle.
He had no sons and was succeeded by his cousin, the ninth Baron. He was the son of the Hon. James Everard Arundell, younger son of the sixth Baron. On his death the titles passed to his eldest son, the tenth Baron. He voted against the Reform Bill 1832, the only Catholic peer to do so. He was childless and was succeeded by his younger brother, the eleventh Baron. Two of the eleventh Baron's son, the twelfth and thirteenth Barons, succeeded in the title. The latter was a Roman Catholic priest. On the thirteenth Baron's death the title passed to his third cousin once removed, the fourteenth Baron. He was the great-grandson of Thomas Raymond Arundell, younger son of the aforementioned the Hon. James Everard Arundell, younger son of the sixth Baron. He died childless and was succeeded by his younger brother, the fifteenth Baron. When he died the titles passed to his son, the sixteenth Baron, who died from effects of service in 1944 during the Second World War. On his death the barony became extinct.
John Richard Arundell, 10th Baron Talbot de Malahide (born 1931) is the son of Reginald John Arthur Talbot, who in 1945 assumed by Royal licence the surname and arms of Arundell, and who was the great-grandson of Admiral The Hon. Sir John Talbot and his wife Mabile Mary Arundell, daughter of Hon. Robert Arthur Arundell, fourth son of James Everard Arundell, 9th Baron Arundell of Wardour and Charlotte Stuart Parkin, youngest daughter of Dr. Henry Parkin, RN, Inspector-General of Hospitals and Fleets.
The Barons took their title from Wardour Castle in Wiltshire, which is now partially ruined.