Hello Viv,
Thanks for the info on Felix. The Felix you are referring to is probably the great-grandson of the Felix I am looking for (Died in Ballybay, County Monaghan, Ireland in 1881)
I am pretty sure that most of the Bannigans originated in this area (at least that is as far back as I have managed to trace them). Felix seems to be a name that recurs quite often as Felix was also the name of Felix's (D. 1881) father.
If you have any info on your Felix's ancestry I would be very interested to see it.
Thanks again,
Des