I am not familiar with Beenreagh. It is possible that I misread the handwriting. I did google the name and found a few things.
1) A townland in Cork county.
2) A mountain in Kerry county near Glenbeigh (Glencar).
3) A reference in the 1823 tithe applotment books to Beenreagh, Ardfert parish, Kerry county. 2 families names were listed, Stack and Shanahan. Both of these families I have noted as being connected to some Fitzmaurice lines.
4) A notice in the Kerryman newspaper dated 12 November 2016 on the passing of Julia Fitzmaurice (nee' Roche) of Beenreagh, Abbeydorney. Abbeydorney is next to Ardfert. Perhaps the border of the parish has shifted over time. If there is an obituary for this Julia Fitzmaurice you may find that she is a relative of yours?
That is all that I have found so far.