Siegfried

Siegfried is a German language male given name, composed from the Germanic elements sig "victory" and frithu "protection, peace". The German name has the Old Norse cognate Sigfriðr, Sigfrøðr, which gives rise to Swedish Sigfrid (hypocorisms Sigge, Siffer), Danish/Norwegian Sigfred. In Norway, Sigfrid is given as a feminine name.
The name is medieval, and did survive in marginal use into the modern period, but after 1876 it enjoyed renewed popularity due to Wagner's Siegfried.
Notable people with the name include:
Medieval
Sigfrid of Sweden (died 1045), English missionary to Sweden and patron saint of Växjö
Siegfried I, Archbishop of Mainz (died 1084)
Siegfried of Luxembourg (922-998), founder of Luxembourg
Siegfried III, Archbishop of Mainz (d. 1249)
Siegfried I, Prince of Anhalt-Zerbst (c. 1230-1298)
Modern
Siegfried Lipiner (1856-1911), an Austrian poet and author
Siegfried Wagner (1869-1930), German composer, conductor, and opera director, the son of Richard Wagner
Siegfried "Fritz" Flesch (1872-1939), Austrian saber fencer
Siegfried Translateur (1875-1944), an Austrian composer of dance music in the early 20th century
Siegfried Sassoon (1886-1967), an English poet, named Siegried by his mother because of her love of Wagner's operas.
Siegfried Rapp (1915–1982), one-armed German pianist
Siegfried Jerusalem (b. 1940), a German operatic tenor
Siegfried Ziering (1928-2000), a German-born American business executive, playwright and philanthropist
Fictional characters
Sigurd or Siegfried, the legendary dragon-slaying hero in Nibelungenlied
Siegfried, leading character in the opera of the same name
Siegfried, the first of Fritz Lang's two-film series, "Die Nibelungen"
Siegfried, a character in History's Strongest Disciple Kenichi
Siegfried (Get Smart), fictional character in 1960s American comedy television series Get Smart
Siegfried, a principal character in the ballet Swan Lake
Siegfried Farnon, one of the main characters in All Creatures Great and Small
Siegfried Schtauffen, main character of the Soul series of fighting games
Dubhe Alpha Siegfried, Saint Seiya anime series character