Charles George Stuart of Ballyhivistock was a first cousin of Major General James Stuart.
Rev Irwin Stuart and his wife Elizabeth (nee McDaniel) had two daughters: Elizabeth (born 1737 married Rev. Hugh McClelland), Jane (born 1739, married Richard Young) and five sons: James Stuart Esq (1743 - 1824 married Grace Lynd), Charles McDaniel, (December 1744 – 1826, married Sarah Dunlop), Archibald (b 1746, married Jane Henry), Henry (b 1748) and Christopher (b 1750).
The oldest son, James (Born 1743, died 1824), built Gracehill and was the father of two daughters, Elizabeth and Grace, who died in early childhood. May have been the first two children. Plus seven other children as follows:
• Frances. Died 1845 ‘at an advanced age’ in 1845. ‘She was a most excellent woman, of great sound sense and sterling worth’.
• Margaret. B 1781 or 1783; known as ‘Cross Peggy’. Died unmarried at the residence of her niece, Sophia Irwin, at Dundalk, 11 Feb 1870, aged 89. A very fine-looking, handsome woman.
• Sophia. M 14 Sept 1812, Thomas Ledlie Esquire of Antrim. MD in the H.E.I.C.S. He was Assistant Surgeon, Bengal, 15 July 1792; Surgeon 1806 and retired 1812. Two daughters: Sophia, died young, and Grace Frances who married Basil George Brooke, of Moyaver, near Armoy, Co. Antrim. He was a grandnephew of the Earl of Macartney and descended from the Brookes of Donegal. Died at Castleblayney, leaving several sons and daughters.
• Caroline, m August 1812, James Irwin of Wellbrook, Co Tyrone.
• Henry Irwin. Born ca 1776. died unmarried 2 Feb 1836 in his 60th year. Captain of the Irish Artillery, then of the Antrim Militia and Treasurer of the County of Antrim. Died unmarried at Gracehill, 2 Feb 1836. Aged 60.
• William. Captain in the Royal Artillery and died in early life in the West Indies in 1809. Unmarried.
• James. (Major General James Stuart, C.B.) A.M. of Trinity College, Dublin and had studied for the Bar. Then joined a Native Infantry Regiment in India, where he served with distinction, having held for many years the honourable office of Military Secretary to the governor General and Government of India. Forced to resign this in consequence of failing health and his promotion to General Officer.
For his valuable services in the war appointed a Companion of the Most Honourable Order of the Bath.
His younger brother, Charles McDaniel Stuart, and his wife Sarah had six children, including Charles George Stuart:
1. Samuel, born 11 August 1786
2. Alexander, born 7 October 1788, died 20 May 1789 [6 months]
3. Jane, born 26 March 1790, died 19 Feb 1794 [four years]
4. Eliza, born 10 Jan 1792
5. Charles George, born 19 April 1793
6. James, born 10 July 1794
I hope this helps!