As for Parsons, the Wired article is being a bit clickbaity. In the last paragraph: Wired.co.uk contacted JPL and we asked whether Parsons had been written out of the history books. Historian Erik Conway said: "Jack Parsons is included in history books and other venues, and in fact, his role is discussed in the JPL-involved standard history, JPL and the American Space Program by Clayton R. Koppes. Parsons was one of the original founders of JPL. He was the team's chemist and developed the first castable solid propellant used to power aircraft."
If you want interesting side stories, how about Qian Xuesen, who was also one of the original handful of JPL founders, and who was hounded from his position and went on to found the Chinese rocket program. (Discussed on HN previously, https://news.ycombinator.com/item?id=6905862). That's a historical figure who has actual significance, not just odd/occult tendencies.
The other interesting back story, besides Wehrner von Braun, is that of the principal founder of JPL, Theodore von Karman, who was a Hungarian Jew who left Europe in 1930. Von Karman was the first Director of JPL. Another founder with a back-story of considerable significance.
Great comment, too!
(dang: Leaving notes when changing titles is great, thanks!)