It's a really fantastic book. Half those legends I didn't even know. Most mythology books give clipped versions of things but Siegfriend's parents had a similar sort of fate to the Children of Hurin. There are loads of parallels between the stories he explains and the Tolkien books but Tolkien puts his own spin on them then gives them... sorry, gave them complicated histories, languages, etc. His head must've been full ALL THE TIME XD