Ballantrae rhymes with:
entree, ashtray, entree, andre, andrei, andrzej, ashtray, cordray, dubray, electrospray, emigre, entree, grandpre, hairspray, madre, padre, svoray, vertebrae, x-ray
Ballantrae sounds like:
blander, blender, blinder, blonder, blunder, blunter, bohlander, bolander, bolender