The events that surrounded the death of Lord Siegfried; see link to story below.
The death of Siegfried is commemorated in a large number of paintings. He is murdered on a hunting trip and then avenged by his wife.
When that linden lead sticks to his back, preventing the dragonblood from immunizing that part, you just know that's not a random bit of information. It helps if you already know the story of Achilles, which the author of the Nibelungenlied probably did.
Slain is a form of the word to slay. Someone who is slain is dead.
Being slain means killed, so it's redundant to say 'fatally slain'. Should just be 'man is slain'.
Siegfried Lowitz's birth name is Siegfried Wodolowitz.
The young man was slain without reason.
Siegfried Jerusalem's birth name is Siegfried Salem.
The spirit was slain before sunrise. The slain body of the housewife was found in her driveway.
Siegfried Sassoon's birth name is Siegfried Loraine Sassoon.
John Siegfried's birth name is Siegfried Otto Speck.
Siegfried Kernen's birth name is Siegfried Willi Kernen.
Siegfried Mynhardt's birth name is Siegfried Charles Ferdinand Mynhardt.