The 7th had a depot in Ireland, and were stationed there on general peace-keeping duties.Thepastisyourself wrote: ↑22 Oct 2020, 13:11 Is there any particular significance of being stationed in Cork, Nass and Dublin?
Sounds like your chap served in one of the depot companies (see below). Text copied from "Historical Record of the 7th Foot" published in 1847. Compiled by Richard Cannon, Esq.
"In the summer of 1825 the regiment was divided into six service and four depot companies; the service companies embarked at Gosport on the 14th and 15th of June for the Ionian Islands, where they were stationed until September 1828, when they were removed to Malta.
In December, 1833, the depot companies embarked at Portsmouth for Ireland, where they arrived in January, 1834; they returned to England in October, 1835, and landed at Portsmouth.
The service companies remained at Malta until the early part of 1836, when they returned to England, and landing at Portsmouth, were stationed at that fortress until June, when they removed to Winchester.
In July 1836 the regiment marched to Windsor, and had the honour of performing the King's duty during the residence of His Majesty King William IV at Windsor Castle.
Leaving Windsor in August, the regiment proceeded into Lancashire, and the head-quarters were stationed at Bolton until the autumn of 1837, when the regiment proceeded to Ireland.
During 1838 the Royal Fusiliers were stationed at Dublin; in May, 1839, they were removed to Kilkenny, and in August following to Cork.
In the autumn six companies embarked for Gibraltar, and arrived at that fortress in November, leaving four depot companies in Ireland.
The service companies remained at Gibraltar until the 19th December, 1844, when they embarked for the West Indies, under the command of Lieutenant-Colonel Farquharson, on board of Her Majesty's Troop Ship "Resistance," and arrived at Barbados on the 18th January, 1845.
The depot companies remained in Ireland from the embarkation of the service companies for Gibraltar until November, 1841, when they proceeded from Cork to Dover, and remained in England until June, 1845, when they returned to Ireland, where they have remained to the present year, 1846.
The service companies at the end of 1846, when this Record concludes, were in the West Indies, the head-quarters at St. Vincent".