| Earldom of Antrim 2nd Creation | |
|---|---|
  Quarterly: 1st & 4th grand-quarters (for MacDonnell) 1st, Or, a Lion rampant Gules; 2nd, Or, a dexter Arm issuant from the sinister fess point out of a Cloud proper, in the hand a Cross-Crosslet fitchée erect Azure; 3rd, Argent, a Ship with sails furled Sable, 4th, per fess Azure and Vert, a Dolphin naiant in fess proper. 2nd & 3rd grand quarters (for Kerr) 1st & 4th, Azure, a Sun-in Splendour Or; 2nd, Gules, on a Chevron Azure, three Mullets Gules; 3rd, Sable, on a Chevron between three Unicorn's Heads Argent, three Mullets Sable. | |
| Creation date | 19 June 1785 |
| Creation | Second |
| Created by | George III |
| Peerage | Peerage of Ireland |
| First holder | Randal MacDonnell, 6th and 1st Earl of Antrim, 1st Marquess of Antrim |
| Present holder | Randal McDonnell, 10th Earl of Antrim |
| Heir apparent | Randal MacDonnell, Viscount Dunluce |
| Remainder to | the 1st Earl's daughters and the heirs male of their respective bodies lawfully begotten |
| Subsidiary titles | Viscount Dunluce |
| Seat(s) | Glenarm Castle |
| Former seat(s) | Dunluce Castle |
 Quarterly: 1st, Or, a Lion rampant Gules; 2nd, Or, a dexter Arm issuant from the sinister fess point out of a Cloud proper, in the hand a Cross-Crosslet fitchée erect Azure; 3rd, Argent, a Ship with sails furled Sable, 4th, per fess Azure and Vert, a Dolphin naiant in fess proper. | |
| Creation date | 12 December 1620 (Earl of Antrim) 26 January 1645 (Marquess of Antrim – 1st Creation) 18 August 1789 Marquess of Antrim – 2nd Creation) |
|---|---|
| Creation | First |
| Created by | James VI and I (Earldom - 1st Creation) Charles I (Marquessate – 1st Creation) George III (Marquessate – 2nd Creation) |
| Peerage | Peerage of Ireland |
| First holder | Randal MacDonnell, 1st Viscount Dunluce (Earldom) Randal MacDonnell, 2nd Earl of Antrim (Marquess- 1st Creation) Randal MacDonnell, 6th & 1st Earl of Antrim (Marquess – 2nd Creation) |
| Last holder | Randal MacDonnell, 1st Marquess of Antrim (1645 creation) Randal MacDonnell, 1st Marquess of Antrim (1789 creation) (Marquessate and Earldom – 1st Creation) |
| Remainder to | The 1st Earls’/Marquess’ heirs male of the body lawfully begotten |
| Subsidiary titles | Viscount Dunluce |
| Status | Extinct |
| Extinction date | 3 February 1682 (Marquessate – 1st Creation) 29 July 1791 (Earldom and Marquessate – 2nd Creation) |
| Motto | TOUJOURS PREST (Always ready) |
Earl of Antrim is a title that has been created twice, both times in the Peerage of Ireland and both times for members of the MacDonnell family, originally of Scottish origins.