Barons Massy (1776) Hugh Massy, 1st Baron Massy (1700-1788) Hugh Massy, 2nd Baron Massy (1733-1790) Hugh Massy, 3rd Baron Massy (1761-1812) Hugh Hamon Massy, 4th Baron Massy (1793-1836) Hugh Hamon Ingoldsby Massy, 5th Baron Massy (1827-1874) John Thomas William Massy, 6th Baron Massy (1835-1915) Hugh Somerset John Massy, 7th Baron Massy (1864-1926) Hugh Hamon Charles George Massy, 8th Baron Massy (1894-1958) Hugh Hamon John Somerset Massy, 9th Baron Massy (b. 1921)
