Edgar's manufacturing company, Prince Corporation, was sold in 1996 (a year after his death) for $1.35 billion.
Edgar and Elsa's son is Erik Prince of Blackwater infamy. As VP of the foundation he is likely responsible for some of the granting decisions. Erik's sister, Betsy, the former Michigan GOP chair, is married to Dick DeVos. Dick's father, Richard DeVos is the founder of Amway. The DeVos family controls four different foundations. The largest of these provided $70 million in funds or authorizations in 2014. I will be reviewing that in about a week. The delay is due to the fact that the Guidestar image is incomplete and the foundation insists on snail mail only.