Thanks guys!
She was definitely Catholic.
One of her marriage certificates gives her father's name as Michael, but she played fast and loose with the truth - on the same certificate she gives her age as 32 when she was close to 40. But she was marrying a 26 year old so it's not surprising that she fudged her age a bit!
I have ascertained that the Monaghan County Library holds the minute books for the Carrickmacross Workhouse, but at present these books are away being repaired, copied and rebound, so it will be some time before they have them back. I will keep checking with the Library and when the books return I will see if I can beg, persuade or coerce someone in to having a look at it for me!
The very helpful Catriona from the Library also told me that the Castleblayney Workhouse minute books are in the Monaghan County Museum, but as for the Clones & Monaghan Town Workhouse minute books, their whereabouts are unknown.
So my next e-stop is the County Museum!