Robert Dillon, 2nd Earl of Roscommon (died 1642) James Dillon, 3rd Earl of Roscommon ( – 1649) Wentworth Dillon, 4th Earl of Roscommon ( – 1685) Carey Dillon, 5th Earl of Roscommon (1627–1689) Robert Dillon, 6th Earl of Roscommon (died 1715) Robert Dillon, 7th Earl of Roscommon (died 1721) James Dillon, 8th Earl of Roscommon (1702–1746) Robert Dillon, 9th Earl of Roscommon (died 1770) John Dillon, 10th Earl of Roscommon (died 1782) Patrick Dillon, 11th Earl of Roscommon (1769–1816) Michael James Robert Dillon, 12th Earl of Roscommon (1798–1850) References Sources – Viscounts External links https://www.armorial.org/produit/99536-gillion_de_roscomont.html http://www.geneanet.org/gallery/?action=detail&rubrique=blasons&id=6167816&desc=gillion_de_roscomont_roissy_en_france http://assumearms.com/achievements/?1000267-Thomas-Gillion%20de%20Roscomont Extinct earldoms in the Peerage of Ireland Noble titles created in 1622