You are a Hungarian; you served in the Seven Years' War.

You left the army on account of weakness of the loins.

You served Monsieur de Quellenberg two years; he is now with the army in Silesia, but there is your certificate signed by him.

You afterwards lived with Doctor Mopsius, who will give you a character, if need be; and the landlord of the "Star" will, of course, certify that you are an honest fellow: but his certificate goes for nothing.

As for the rest of your story, you can fashion that as you will, and make it as romantic or as ludicrous as your fancy dictates.