Margarethe rhymes with:
airworthy, cathey, creditworthy, dianthe, esworthy, foxworthy, galsworthy, goldsworthy, kenworthy, langworthy, luthi, mathey, matthey, nasworthy, newsworthy, norsworthy, northey, noseworthy, noteworthy, praiseworthy, seaworthy, swarthy, tolanthe, trustworthy, untrustworthy, unworthy, worthey, worthy
Margarethe sounds like:
margaret, margareta, margarete, margarita, margret, marguerite, markert, markwardt, marquard, marquardt, marquart, marquerite, morgart