I'm trying to find out about glassworks in Dublin too.
My gggrandfather John Little was born in Dumbarton and came to Dublin via Glasgow where he and his father (John Little, just to help matters) were both working in the glassmaking business, but not apparently together. I think they both worked in Dumbarton too.
In 1868-70 his father went to Newton-le-Willows in Lancashire and he left for Dublin.
He is supposed to have been a supplier of bottles for Guinness. (My Uncle Fred's memoirs).
His son and grandson (both John again!) are still in the bottlemaking business in Dublin in the published Irish censuses. And my (work) information about him stops.
I do know that there were various bottle works in Ringsend around that time. I gleaned this bit from a late 19C book online:
"Pring's glass-house was afterwards known as the Ringsend Bottle
Company, ( ELIJA PRING) and in the Cork Exhibition of 1883 exhibited black and white bottles.
Three other glass bottle factories also had exhibits, viz. : The Irish Glass Bottle Company, Charlotte Quay, Ringsend ; The Dublin Glass Bottle Company, North Lotts, and Alexander Brown and Son, 175 Church Street.
At the present day there are four glass bottle works in Dublin, viz. : The Hibernian Glass Bottle Works, The Irish Glass Bottle Works, and the Ringsend Bottle Company, all at Ringsend, and Alexander Brown's Bottle Works, Church Street." (After 1883)
Then I couldn't find much about them!
Two heads better than one?