The title was created on 24 December 1802 for the notable lawyer and politician Henry Dundas. He was created Baron Dunira, of Dunira in the County of Perth, at the same time, also in the Peerage of the United Kingdom. Dundas, who was the fourth son of Robert Dundas, of Arniston, the elder, declined an earldom in 1809. He was succeeded by his son, the second Viscount, who was also a noted politician. He assumed for himself the additional surname of Saunders, which was that of his father-in-law. His son, the third Viscount, was a General in the British Army. The latter was succeeded by his younger brother, the fourth Viscount, who in his turn was succeeded by his nephew, the fifth Viscount, the eldest son of Reverend the HonourableCharles Dundas, Rector of Epworth, Lincolnshire, fourth son of the second Viscount. The fifth Viscount was succeeded by his younger brother, the sixth Viscount, a minor diplomat. The titles descended from father to son until the death of the sixth Viscount's grandson, the eighth Viscount, in 1971. The latter was succeeded by his nephew, the ninth Viscount, the eldest son of the Honourable Robert Maldred St JohnMelville Dundas, second son of the seventh Viscount. the titles are held by the ninth Viscount's eldest son, the tenth Viscount, who succeeded in 2011. The family seat is Melville Castle between Dalkeith and Lasswade. The first five viscounts are buried in a simple vault in Old Lasswade Kirkyard. The 6th Viscount Melville, Charles Saunders Dundas, lies opposite his wife, Mary Hamilton Dundas, in the small north cemetery in Lasswade, adjacent to the old kirkyard. Their son, the 7th Viscount merely appears as a footnote on the monument.
Viscounts Melville (1802)
Henry Dundas, 1st Viscount Melville
Robert Saunders–Dundas, 2nd Viscount Melville
Henry Dundas, 3rd Viscount Melville
Robert Dundas, 4th Viscount Melville son of 2nd Viscount and brother of the 3rd
Robert Dundas, 5th Viscount Melville
Charles Saunders Dundas, 6th Viscount Melville
Henry Charles Clement Dundas, 7th Viscount Melville
Henry Charles Patric Brouncker Dundas, 8th Viscount Melville