Baron de Ros - Barons de Ros of Helmsley (1264)

Barons De Ros of Helmsley (1264)

• Robert de Ros, 1st Baron de Ros (d. 1285)
• William de Ros, 2nd Baron de Ros (d. 1316)
• William de Ros, 3rd Baron de Ros (d. 1343)
• William de Ros, 4th Baron de Ros (c. 1326–1352)
• Thomas de Ros, 5th Baron de Ros (1336–1384)
• John de Ros, 6th Baron de Ros (c. 1360–1394)
• William de Ros, 7th Baron de Ros (c. 1369–1414)
• John de Ros, 8th Baron de Ros (d. 1421)
• Thomas de Ros, 9th Baron de Ros (c. 1405–1431)
• Thomas de Ros, 10th Baron de Ros (c. 1427–1464) (forfeit 1464)
• Edmund de Ros, 11th Baron de Ros (d. 1508) (restored 1485, barony abeyant in 1508)
• George Manners, 12th Baron de Ros (d. 1513) (abeyance terminated about 1512)
• Thomas Manners, 1st Earl of Rutland, 13th Baron de Ros (d. 1543)
• Henry Manners, 2nd Earl of Rutland, 14th Baron de Ros (1526–1563)
• Edward Manners, 3rd Earl of Rutland, 15th Baron de Ros (1549–1587)
• Elizabeth Cecil, 16th Baroness de Ros (c. 1572–1591)
• William Cecil, 17th Baron de Ros (1590–1618)
• Francis Manners, 6th Earl of Rutland, 18th Baron de Ros (1578–1632)
• Katherine Villiers, Duchess of Buckingham, 19th Baroness de Ros (d. 1649)
• George Villiers, 2nd Duke of Buckingham, 20th Baron de Ros (1628–1687) (barony abeyant 1687)
• Charlotte FitzGerald-de Ros, 21st Baroness de Ros (1769–1831) (abeyance terminated 1806)
• Henry William FitzGerald-de Ros, 22nd Baron de Ros (1793–1839)
• William Lennox Lascelles FitzGerald-de Ros, 23rd Baron de Ros (1797–1874)
• Dudley Charles FitzGerald-de Ros, 24th Baron de Ros (1827–1907)
• Mary Frances Dawson, 25th Baroness de Ros (1854–1939) (abeyant 1939)
• Una Mary Ross, 26th Baroness de Ros (1879–1956) (abeyance terminated 1943; abeyant 1956)
• Georgiana Angela Maxwell, 27th Baroness de Ros (1933–1983) (abeyance terminated 1958)
• Peter Trevor Maxwell, 28th Baron de Ros (b. 1958)

The heir apparent to the barony is the Hon. Finbar James Maxwell (b. 1988).