Interesting. It helps to dig to see what's on offer. Their
FAQ section is generally encouraging as to their mission and who they are. Newman Lake WA is near Spokane, so maybe the family is associated with one of the chapels there. The FAQ answers for the site overall (not just the secret societies part) seem to hint that they're Catholic yet not so exclusively in content as to put off Protestants or "freethinkers" looking for history resources for homeschooling.
Thanks for the link, and it has been bookmarked.