Were you able to find anything about this family? I have been tracing the family of a friend. Her late husband was a son of William Hanna Cowan who was born in Fermanagh in 1890.
His parents were James and Maggie. I know that the family were in Fivemiletown in Tyrone in 1901 and then moved to county Armagh in 1911, at which time James was working as a farm servant in county Fermanagh. I understand that Maggie's father was named Charles George Jessiey, an ex soldier, deceased at the time of the marriage. However I suspect that the surname may not be correct.