Dave- welcome to Rootschat and to Aghadowey (in a manner of speaking). I like a short distance from Brone and am, probably, related to these Lynds.
First of all Brone/Broane/Broan are all local names for the townland of Mullinabrone which probably means something like "the little summit of the mill-stone."
Briefly:
William Lynd (c1780-1857), farmer, Mullinabrone, m. Mary Hill (c1800-1875) and had:
1. Catherine (c1829-1863).
2. Nancy m.(1871) Hugh Henry, Glasgort.
3. Martha Jane (14 May 1835) m.(31 May 1860) Robert Henry.
4. Andrew (c1827-1882) m.(1870) Hannah Alexander & had: James Alexander, William John, Robert Thompson, Martha Jane, Andrew, Ann/Annie.
5. Ellin m.(1855) James Tannahill.
Robert Henry, born 1833, m.(31 May 1860 Aghadowey Presbyterian Church) Martha Jane Lynd. Children:
1. Ellin Jane, bapt. 4 June 1861 Aghadowey Presbyterian Church.
2. James, bapt. 24 July 1863 Aghadowey Presbyterian Church.
3. William John born 15 Aug.1865 Garvagh dist. (probably Brone), bapt. 1 Sept.1865 Aghadowey Presbyterian Church.
4. Robert born 27 Oct.1867 Garvagh dist. (Brone?), bapt. 12 Dec.1867 Aghadowey Presbyterian Church.
5. David born 26 July 1870 Brone, bapt. 28 Sept.1870 Aghadowey Presbyterian Church.
6. Ann born 29 June 1873 Brone.
7. Ernest born 1876 Melbourne.
Have more on Lynds and a bit on Henrys.