Not quite yet.
This one in 1873
https://www.familysearch.org/ark:/61903/3:1:3Q9M-CS54-WWRV?i=287&cat=185720bottom of right hand page, gives the impression it's next to Fryars Grange.
There is a Friers Grange in the Civil Parish of Coolmudry which is in the Barony of Middlethird.
So I think Rathlevane is in Coolmudry or right next to it. Granted the spelling is slightly different so not 100% sure it the same place.
Up to 1894 and always Rathlevane is listed with lots of other places in big exchanges/leasing of land of 100s of acres.
It almost always appears with Downsallagh, another place I can't find.