OOB Ireland: end of 1798 - early 1799:

https://drive.google.com/file/d/1Ag7gzb1KCG1LkSwJ7oFeKsXY_WImUI3s/view?usp=sharing

This is copied from:

The Gentleman's and Citizen's Almamack For The Year 1799. Looking at the promotion dates of officers thereon, the date of the OOB would be between late 1798 and early 1799, see below.

Irish Establishment 1799:
From The Gentleman’s and Citizen’s Almanack ... 1799. pp. 98-*100:

General:

General [12.x.1793] Lord Charles Mann Cornwallis, 1738-1805:

Lieutenant Generals:

26.i.1797 Gerard Lake, 1744-1808:
https://en.wikipedia.org/wiki/Gerard_Lake,_1st_Viscount_Lake
Pearse. Memoir of the Life and Military Services of Viscount Lake ; Baron Lake of Delhi and Laswaree. 1744 - 1808. 1908. 1 Portr., IX S., 3 Bl., 432 S., 2 Taf., 5 Kart. :
https://babel.hathitrust.org/cgi/pt?id=coo.31924064123262
https://archive.org/details/memoiroflifemili00pear

26.i.1797 Ralph Dundas, 1730-1814:
https://en.wikipedia.org/wiki/Ralph_Dundas

1.i.1798 Samuel Hulse, 1746-1837:
https://en.wikipedia.org/wiki/Samuel_Hulse

1.i.1798 Peter Craig, -1810

Major Generals:

20.xii.1793 Henry Johnson, 1748-1835: [Gen. Lt. 26.ix.1799] https://en.wikipedia.org/wiki/Sir_Henry_Johnson,_1st_Baronet

20.xii.1793 Charles Cornwallis Eustace, 1737-1801: [Gen. Lt. 26.ix.1799]
https://www.geni.com/people/Maj-Gen-Charles-Eustace/6000000024197301235

20.xii.1793 Thomas S[loughter]. Stanwix, -1815: [Gen. Lt. 26.vi.1799; General 25.iv.1808]:

3.x.1794 William Fawcett, 1727-1804:
https://en.wikipedia.org/wiki/William_Fawcett_(British_Army_officer)

3.x.1794 [Alexander] Campbell, c.1750-1832:
https://en.wikipedia.org/wiki/Alexander_Campbell_(died_1832)

3.x.1794 Sir James Duff, knt., 1752-1839: https://en.wikipedia.org/wiki/James_Duff_(British_Army_officer)

26.ii.1795 Charles Graham, :

26.ii.1795 Peter Hunter, 1746-1805:
https://en.wikipedia.org/wiki/Peter_Hunter

26.ii.1795 Hon. Francis Needham, 1748-1832:
https://en.wikipedia.org/wiki/Francis_Needham,_1st_Earl_of_Kilmorey

3.v.1796 George Nugent, 1757-1849:
https://en.wikipedia.org/wiki/Sir_George_Nugent,_1st_Baronet

3.v.1796 Hon. J[ohn]. H[ely]. Hutchinson, 1757-1832:
https://en.wikipedia.org/wiki/John_Hely-Hutchinson,_2nd_Earl_of_Donoughmore

3.v.1796 William Loftus, 1752-1831:
https://en.wikipedia.org/wiki/William_Loftus_(British_Army_officer)
https://www.geni.com/people/Gen-William-Loftus-MP/6000000034812338776

3.v.1796 William Meyers, :

Brigadier Generals:

Hon. Robert Taylor, 1760-1839: [Maj. Gen. 1.i.1801]: “During the Irish Rebellion of 1798 Taylour was promoted to brigadier-general in Ireland, and was second in command in the Battle of Ballinamuck, where he was mentioned in despatches by his superior, General Lake[4]”; Major-General 1.i.1801:
https://en.wikipedia.org/wiki/Robert_Taylor_(British_Army_officer)

[Charles] Barnett, :-1804 [Maj. Gen. 1.i.1801]

[George Gordon] Marquis of Huntly, 1770-1836: [Maj. Gen. 1.i.1801] :
https://en.wikipedia.org/wiki/George_Gordon,_9th_Marquess_of_Huntly
https://en.wikisource.org/wiki/Gordon,_George_(1761-1853)_(DNB00)
http://www.napoleon-series.org/research/biographies/BritishGenerals/c_Britishgenerals219.html

Brydges T[recothic] Henniker, 1767-1816: [Maj. Gen. 29.iv.1802]
https://www.ancestry.com/genealogy/records/lt-gen-sir-brydges-trecothic-henniker-st-bt-of-newton-hall-24-2zbq3

[Josiah] Champagne, 1775-1840: [Maj. Gen. 25.ix.1803] :
https://en.wikipedia.org/wiki/Josiah_Champagné

[Edward] Dunne, 1762-1844: [Maj. Gen. 25.ix.1803]

[Thomas] Meyrick, -1830: [Maj. Gen. 25.ix.1803]

[Francis] Grose, 1754 or 1758-1814: : [Maj. Gen. 1.i.1805]
https://en.wikipedia.org/wiki/Francis_Grose_(British_Army_officer)

[Duncan] Campbell, 1763-1837: [Maj. Gen. 25.ix.1803] :
https://en.wikipedia.org/wiki/Duncan_Campbell_(British_Army_general)

Adj. Gen. : Maj. Gen. George Hewett, :

Quarter Master Gen. : Maj. Gen. J. F. Cradock, :

Govenors of Forts and Garrisons: