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 :)"