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| 1684: | on the Irish establishment Arthur, Earl of Granard’s Regiment of Foot │ |
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| 1686: | Arthur, Earl of Granard’s │ |
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| 1689: | John Edgeworth’s │ |
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| 1689: | to the English Establishment │ |
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| 1689: | Edward, Earl of Meath’s │ |
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| 1692: | Frederick Hamilton’s │ |
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| 1695: | Royal Regiment of Ireland Frederick Hamilton’s │ |
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| 1705: | Richard Ingoldsby’s │ |
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| 1707: | Kingdom of Great Britain | |
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| 1712: | Robert Stearne’s │ |
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| 1717: | William Cosby’s │ |
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| 1732: | Charles Hotham’s │ |
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| 1735: | John Armstrong’s │ |
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| 1742: | John Mordaunt’s │ |
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| 1742: | ranked as 18th Foot │ |
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| 1747: | John Folliott’s │ |
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| 1751: | 18th (or Royal Irish) Regiment of Foot │ |
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| 1782: | 18th (The Royal Irish) Regiment of Foot │ |
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| 1801: | United Kingdom of Great Britain and Ireland | |
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| 1803: | 2nd Battalion raised │ |
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| 1814: | 2nd Battalion disbanded │ |
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| 1857: | 2nd Battalion raised │ |
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| The creation of the territorial regiments by the Childers reforms | ||
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| 1881: | 1st Battalion, 2nd Battalion, | |
The Royal Irish Regiment
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| 1922: | disbanded |