It seems too unlikely.Looking at a map, your Schwefel would've been almost on the opposite side from the Schwegels that I've been able to identify.The area that mine came from is almost positively near the border of France.We can identify birthplaces of Alsace, Lorraine for the Fath relatives.Some old photos came from Saarbrucken (with an umlout on the "u") and Neunkirchen.That would be in the Saarland area.A last name of Largmann appears.
I have corresponded with Schwegels in Germany but that branch was from around the area of Austria and the Alps (Saltzburg) but no where near high enough to have gotten to Poland easily.
The closest I can get would be Barbara Welsh married Albert Wessolowski in Millville, New Jersey.His naturalization records states that he is German but it sure sounds like a Polish last name.Albert's brother listed his birthplace as "the city of Domzig, Germany."As this got written up by an English speaking person and I can't find a Domzig, it could be Dommitzsch or Domitz (umlout on the "o") (or other possiblilities but those are my first guesses.)Those are enough around Berlin to start being close to where you are talking about.But so far I haven't come across a Schwegel from that area.