Siegfried

Siegfried Knemeyer was an aeronautical engineer and aviator for the Luftwaffe in WWII. Highly favored by Hermann Göring for his ideas that were pivotal to Germany's early success in the air war (Göring often called him "my boy"), and was promoted to Oberst (Colonel). Worked for the Americans as part of Operation Paperclip.

Siegfried the Dragonslayer is the Hero of the ancient German epic saga, the Nibelungenlied.

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Also of Wagner's operas, based off of the German legends.

Siegfried Wentz is a former German track and field athlete. In the 1980s and until 1990 he represented West Germany and belonged to the world elite in the decathlon. His most notable result was winning the bronze medal at the 1984 Summer Olympics in Los Angeles, California. At that event he scored 8412 points, his results for each of the events were 10.99s - 7.11m - 15.87m - 2.09m - 47.78m - 14.35s - 46.60m - 4.50m - 67.68m - 4:33.96 min.

Siegfried Schneider is a German former volleyball player who competed for East Germany in the 1968 Summer Olympics and in the 1972 Summer Olympics.

Siegfried Jerusalem is a German operatic tenor. Closely identified with the heldentenor roles of Wagner, he has performed Siegfried, Siegmund, Lohengrin, Parsifal, and Tristan to wide acclaim. Since the 1990s, he has focused on lieder, particularly those by Strauss, Mahler and Schumann.

Siegfried Bing (February 26, 1838 – September 6, 1905), often referenced erroneously as "Samuel Bing", was a German art dealer who lived in Paris.

Siegfried Schtauffen is a character in the Soul Calibur video games.

Seigfried was a leader of KAOS on the television show Get Smart.

This was the name of the prince in Swan Lake who falls in love with Odette.

The WWI poet Siegfried Sassoon bore the same name. He was English, but his mother fancied it and decided to use it anyway :)

Siegfried Fischbacher is half of the "Siegfried and Roy" magic duo known for their work with tigers.

This is the name of James Herriot's employer in his books about his life as a country vet (Most notably, All Creatures Great and Small). When questioned about its origins, Siegfried explained that his father was a great fan of Wagner.