1,408 Louth voters in 1865
| Name | Barony | Address | Landlord |
|---|---|---|---|
| Jeffers James | Ferrard | Mell | Captain H.S. Singleton |
| Jeffers James | Ferrard | Mell | Captain H.S. Singleton |
| Jeffers John Lee | Ferrard | Mell | Captain H.S. Singleton |
| Jeffers John Lee | Ferrard | Mell | Captain H.S. Singleton |
| Jeffers Richard | Ardee | Legmorghan Co. Armagh | |
| Jeffers Richard | Ardee | Legmorghan Co. Armagh | |
| Jennings Patrick | Dundalk Upper | Dundalk | |
| Jennings Patrick | Dundalk Upper | Dundalk | |
| Jocelyn Augustus G.F. | Dundalk Upper | 21 Cockspur-st Charing Cross London | |
| Jocelyn Augustus G.F. | Dundalk Upper | 21 Cockspur-st Charing Cross London | |
| Jocelyn John | Dundalk Upper | Briansford Co. Down | |
| Jocelyn John | Dundalk Upper | Briansford Co. Down | |
| Johnson Thomas | Louth | Mooretown | Lord Clermont |
| Johnson Thomas | Louth | Mooretown | Lord Clermont |
| Johnston Arthur | Dundalk Upper | Dundalk | |
| Johnston Arthur | Dundalk Upper | Dundalk | |
| Johnston Charles C. | Ardee | 27 Lower Fitzwilliam stret Dublin | |
| Johnston Charles C. | Ardee | 27 Lower Fitzwilliam stret Dublin | |
| Johnston Graham | Dundalk Upper | Dundalk | |
| Johnston Graham | Dundalk Upper | Dundalk |
