Hi Lynda,
I have McGoohan (and spelling variations) family born in Killahurk, Carrigallen, Co. Leitrim. Is your connection to Oughterragh a firm one, or is Carrigallen possible?
My great grandmother, Alice McGoohan (dob unknown) married Thomas Richards in Aughavas, Co. Leitrim, 10 May 1886. While I have some information on the couple, a lot of the material is tenuous at best. My great grandfather was probably Protestant as there is family conviction that he changed religion to marry Alice.
Alice's parents were Thomas McGoohan and Alice McGurn, dates unknown. Siblings probably included Daniel and Patrick (b. 1865?) and possibly others. Family stories have Patrick emigrating to the US, where the family name was known as McGowan.
The McGoohan spelling was found via a researcher in Ireland and was a total surprise to us.
Contact me if you think you have some connections here or would like more information. Best wishes with your search.
Anne