Sorry to put a spoke in, or a damper on what OP thinks of as a resolved question.
The question was her maiden name. That is certainly resolved.
The original question was the maiden name of the bride in a specific marriage, in Co. Carlow, in 1831.
Now it appears you are uninterested in the fact that that marriage is not actually yours. Neither have you shown any interest in where in Co. Monaghan your relative came from.
My apologies for having tried to be of assistance.