Caledonian's rhymes with:
amazonians, babylonians, estonians, jacksonians, jeffersonians, oregonians, smithsonian's, washingtonians, albanians, amazonians, argentinians, armenians, athenians, augustinians, babylonians, bosnian's, bosnians, bostonians, carolinians, chechnyan's, chechnyans, estonians, finian's, indianians, iranians, iranians', jacksonians, jeffersonians, jordanians, lithuanians, louisianians, oregonians, orleanians, palestinian's, palestinians, palestinians', panamanians, pennsylvanians, romanians, smithsonian's, stepanian's, ukrainian's, ukrainians, washingtonians
Caledonian's sounds like:
caladiums, clayton's, clothing, clotting, cloudiness, clouding, coagulating, coalition's, coalitions, coldness, colliding, colluding