Veitch - Armstrong Families

I am looking for any information on my ggg-grandparents James Veitch and Emily Armstrong.  I know they were married in Sligo on Sept. 20, 1824.  Attached is a newspaper clipping I found with the marriage announcement.  It says that James is from Dublin and Emily is the daughter of the late Capt. John Armstrong of the Fermanagh Militia. I know that they lived in Killeshandra, Cavan.  They were both born in 1798.  James died in 1868 and Emily in 1878.  They had five children: Jane, Frances, James, Margaret and Caroline. I know they were not catholic, so I assume they were COI. 

Thank you for any help!