Answer:
His blood is no longer "true" because it has been contaminated by a grave sin-he slept with his own kin! Thus, his name could also mean he speaks the truth. Ellison might be using the name as a technique (besides empathy) to give Trueblood's story credence.
Explanation:
What they share the most is the fact that they are Survivors, although they survived quite different experiences, they both managed to stay alive despite all odds. Juliane Koepcke survived a plane crash and eleven days in the Amazon jungle, Bill Garleb was a prisoner in the Philippines during World War II.
If you do not know your audience's interests you will probably lose their interest.