Markwardt rhymes with:
dorwart, betancourt, bettencourt, cohort, devenport, dorwart, export, gulfport, hyannisport, manafort, newport, rapoport, rappaport, rappoport
Markwardt sounds like:
margaret, margareta, margarete, margarethe, margarita, margret, marguerite, markert, marquard, marquardt, marquart, marquerite, morgart