an ad hoc translation by Heinrich Siemens:
Wan Tugent sich met freidje Scheenheit poat,
Dan ess dien Schwesehn eeha straum aus schwoat.
If virtue conjugates/mates [pairs] with joyful beauty,
Then your son-in-law is more beautiful than black.
Heinrich adds: "All of the Plautdietsch speakers know German/Russian/English/Spanish/etc., and there is no Plautdietsch theatre playing Shakespeare, so there is no real need for a complete translation. It is just not to miss Plautdietsch in your list :)"