HYNDMAN Barre Beresford - where is he buried?

I'm currently stuck on trying to find (amongst many many things) where, if anywhere, was my gg grandfather Barre Beresford HYNDMAN was buried.  From the GRONI death record which I have, we know he died (30 March 1876) at his brother Henry's farm in Carnamuff (GPS: 55.0310, -7.0700), but we cannot track any burial site for him.  We've found that his brother Henry (and Henry's family) are all buried in the St Canice's CI cemetery in Eglinton, but there's no indication that Barre was buried anywhere near there.
Barre had been living with his wife in Donemana/Dunnemanagh, Co Tyrone, but appears to have gone to his brother, possibly to be looked after in his last days, as his wife (second wife) Jane, died in Donemana only two months after him (so I imagine she was too sick to look after Barre...).  That's my guess.
As Barre died a couple of years before any of his brother's family, and because he wasn't now living in the Carnamuff/Eglinton/Ballykelly area, possibly nobody worried about setting up a gravestone for him.  But presumably he was buried somewhere, and if so, wouldn't there be a record of the burial somewhere, even if there were no headstone?

Hmmm.  Any suggestions?

Ross

(I've also posted this in the Tamlaght Finlagan message board, as he may have been buried somewhere in that area.)