Marshall's rhymes with:
marshal's, marshals, martials, marshal's, marshals, martials, marshal's, marshals, martials, beneficial's, bushels, commercial's, commercials, credentials, differentials, facials, ficials, financial's, financials, herschel's, infomercial's, infomercials, initials, marshal's, marshals, martials, official's, officials, officials', special's, specials
Marshall's sounds like:
marcellus, margolick, margolies, margolis, margulies, margulis, marsalis, marschalk, marseilles, marshal's, marshalls, marshals, marsolek, marszalek, merciless, miracles, miraculous, morsels