Unable to find death date

[Kiltaglassan]

..it mentions Brooksborough..

Brookeborough
https://www.openstreetmap.org/relation/3583449#map=13/54.30761/-7.41852

[Cas (stallc)]

May not apply but have you searched under Bryan/Brian.  Researching my extended family for a Bernard Hurley he became Bryan in 1901 census.  Identified through wife/family (Galway)

Also this thread

https://www.rootschat.com/forum/index.php?topic=655612.0

Cas

[aghadowey]

Regarding posting census details as mentioned earlier-

URL link-
https://www.census.nationalarchives.ie/reels/nai000781175/

This is not the link I prefer to post as it only links to the actual image and if you want further information then you need to search again.

This is the link I prefer (although these links will apparently soon change)-
https://www.census.nationalarchives.ie/pages/1901/Fermanagh/Grogey/Altnaponer/1356619/
Yes, it does take you to the transcribed page which may contain errors but from that page you can view the actual image (household return form A), the enumerator's return (form N) and house and building return (form B1). In the 1911 census there are two more forms that are linked to the transcription page.