I have a... unique you could say, experience/perspective on all this. I grew up around that Household and adjacent to it. My mother ran the FoD fan club for MZB in the '70's out of Marion's house, called Greenwalls, and I would often go there after school. Marion's children Moira and Mark (not the names I knew them by at the time) were a good few years older than my sister and I, and we grew up with Marion's nephew and niece and spent multiple weekends with them at Greyhaven.