Great Bear: (all Dwecks are related regardless of spelling, and that includes the French Doueck spelling and Spanish Duek)
Actually that’s not true. The name had very high status back in Syria, as chief rabbis and very important people were in the family. Others have copied the name for themselves to sound choshuv. I have heard that this is the case with Dweck-Chalutzies but I am not completely sure.
Aside for the Dwecks, there’s also the Tawil and Maslaton families.
All Tawil’s trace back to Eli HaKohen. The Maslaton’s also have a very choshuv yichus but I don’t remember it anymore.