Am sure I originally picked up on this name via the Miller's/McConnell book '20TH-CENTURY GLASS' - page 237. It forms part of an interesting eight page section solely on Stuart, from the late C19 up until approximately the late 1930's, and covers most of the better known types and patterns of glass, produced by this factory.
Andy McConnell speaks of ............"Kny's Waterford pattern...........derived from the C18 repetoire ..................etc." I have in fact quoted, elsewhere when we were speaking of 'Waterford', the full caption accompanying his pictures, where he says that some pieces in this pattern are in fact signed by Kny.
Reading Andy McConnell's comments in Miller's, he comments that 'Waterford' was a cut pattern adopted by English cutters in the late C18 - so perhaps it was something that Kny chose and gave his own variation of. Apparently, despite the seemingly obvious connection, this pattern has nothing to do with Ireland.
Nigel also refers to this cut design, in his 'ART DECO TO POST MODERNISM', where he writes ............."known locally as the 'Waterford Pattern' (page 11).
Would imagine this is one of the earlier names given to a cut design from Stuart, and although it appears to have remained in production until at least the early 1950's, I've no idea if it survived beyond that period................. judging by the book references it's heyday looks to have been c. 1930 - 1950.
If you have a rummage through my contributions re Stuart/Waterford, you'll probably find where I quote, in full, McConnell's words from the book.