Rathburne's rhymes with:
cockburn's, hepburn's, swinburne's, swinburnes, caverns, cisterns, cockburn's, eastern's, governs, hepburn's, interns, irons, lanterns, mcgovern's, moderns, northern's, northwestern's, patterns, saturn's, saturns, severns, southeastern's, southern's, swinburne's, swinburnes, taverns, western's, westerns