Hi Carole:
I found the grave. It was in Kill Graveyard, Our Lady of Mount Carmel Church. The clue that suggested Kill was in your post, that William had been a coast guard, stationed in Bonmahon, when his children died. So, it seemed likely that they would have been buried locally.
Bonmahon is split in 2 by the Mahon River. The east side is called Knockmahon and is in the parish of Kill. The west side is Bonmahon and is in the parish of Ballylaneen and Stradbally. The Ballylaneen graveyard is on a hill of very sloping ground. Your picture didn't look at all like this. Kill graveyard is beside the Gardenmorris Estate and is very wooded. It is also on level land, more like your picture.
After a couple of hours of walking the graveyard, checking the tombstone inscriptions, I was almost ready to give up, when I saw a dark tombstone of the same shape as the one in your picture. The iron rails are still around it but are very shaky. The tombstone is very dark with age and lichen, not the shining white, as in your picture. Also the surrounding trees have been cut down and replaced by a hedge, and the graveyard tidied up with neatly cut grass. But, the Celtic crosses in the background are still there.
The inscription on the tombstone reads:
"Erected by William Cohglan of Ferrybank In loving memory of his dearest wife Elizabeth Coghlan Died Nov 2, 1925 aged 64. Also their beloved children John, Maud and Henry. The above William Coghlan died 4th Jan 1933 Aged 70.
Saint Anthony pray for us That on the last day That we may be placed on the right hand side."
R I P
The grave is located near the the still standing sacristy of the old church. If you ever come to Ireland I would be happy to show you where it is. Sorry, I didn't get a picture of how it looks now.
Regards,
Mary Lawton