Sorry for the late response but I am VERY interested in sharing information with you about Irwins from Cloveneden in Loughgall... you see...
My Great-Great Grandmother, Sarah Jeanette Irwin, was born in Cloveneden in 1857. She had several sisters and two brothers... most of which left Ireland in the 1880s.
Her father and mother were George and Rachael (Thompson) Irwin. He was born in Cloveneden in 1832 and she was born in nearby Kinego.
George had two brothers (James and William John) and two sisters (Mary Anne & Alice). All were born in Cloveneden between 1826 and 1840. Their parents were John and Sarah (Lavery) Irwin... John was born around 1795 in Cloveneden. Sarah was born in Kinego, Co. Tyrone (nearby).
If you are interested I can give you more details. I only followed George and Rachael's line since that is where I am descended from.
Cloveneden was such a small place that I am sure our families are related.