I've found the location on the map at AskaboutIreland, and hit "show namebooks", and it doesn't show up, though some nearby locations do.
I've also tried to find it by typing the spelling, both modern (with and without space), and the particular reference that I was hoping to find.
I tried to find it by browsing, but failed on my initial attempt, but then I thought of a better technique.
I went to Irishtownlands.ie, found the parish, and found a townland with a simple spelling that came before the one I was looking for alphabetically.
I found a printed reference of the spelling, which is one thing I was looking for, but next to it, it said "barony map", without any year. I was hoping to look at the original.
This area survives for the Down Survey, but it seems to almost definitely be a reference to something else, as the spelling is notably different. I would guess they were looking at an old map, though not as old as the Down Survey.