as Honza said - Max Immelmann
was a citizen of the Kingdom of Saxony and born in Dresden. I think I recall his mother and sister moved to Leipzig late in 1914 or in 1915.
The distance between Dresden and Leipzig is 111 km.
Franz Büchner was the most successful (Royal) Saxon with 40 victories and was born and died in Leipzig.
Oswald "Ossi" Boelcke was born in the "Provinz Sachsen" which became a part of Prussia already centuries ago when a Saxon ruler sold the land. Nevertheless the (Royal) Saxons insisted that Boelcke would be a Saxon. In fact he moved from the "Provinz Sachsen" to Dessau and lived in the Duchy of Anhalt. Therefore he was not a "real" (means a citizen of the kingdom of Saxony) Saxon but he lived in an area with upper-saxon dialect.
The latter had an important influence on the creation of the modern German language (Martin Luther comes to mind in this connection).
The whole matter becomes even more difficult if we consider the very little states in Thuringia with names like "Sachsen-Coburg-Gotha".
Today we have three "Länder" with the term "Sachsen" inside their names:
Niedersachsen (Lower Saxony, created by the Britons), Sachsen-Anhalt (SIC!, with the main towns Magdeburg and Halle) and the Freistaat Saxony (with Dresden and Leipzig).
I will not report here about Saxons in Sussex. Essex, Wessex etc. pp. or the relatives of all the afore mentioned tribes in the USA and other places of the world.
I read about the many German settler in St. Louis in the novels by Karl May (1842-1912) - our local heroe who wrote many works about adventures among Indians, bandits and European settlers in the Wild West and other corners of the world. Therefore you can find an "Indian Museum" in Dresden-Radebeul and every year "real" Indians and other Americans present their skills and culture (dances, paintings etc.) in great Shows here and make friendship with our "Spare time-Indians".
PS: Wüsthoff was born in Aachen but moved with his parents to Dresden. He lived and died in Dresden.