Something led me to Dick Van Dyke's Wikipedia page where it was mentioned that his niece, Kelly Jean Van Dyke, was an actress. Never heard of her before, so I looked her up. Turns out she ended up in the porn industry as Nancee Kelly, before hanging herself at age 33.
It appears that her dad, Jerry Van Dyke, wasn't the Hail Fellow Well Met that he was on-screen. Here's a clip from the article I found:
https://tvshowstars.com/nancee-kelly-bio-death-abuse-parents-age-marriage-husband/ "During an interview, the late movie actress opened up about her father and the abuse she faced as a child. Kelly opened up about how her father raped her when she was just 12 years old.
Likewise, it was when Jerry was a sitcom actor during the 70s; at that time, he used to be a heavy drinker. After coming home drunk, Jerry then used to assault his daughter sexually. However, Nancee’s pain did not just end there.
As if assaulting your daughter was not cruel enough, Jerry used to bring his fellow friend, Robert Mitchum, and asked Kelly to please him. Moreover, she was also forced to have a relationship with Martin Landau at the movie theatre.
Went looking for a secondary source for this and it appears the original source for the article was Crazy Days and Nights. This from the SGT Report:
Crazy Days and Nights (CDAN) is a Hollywood blog run by someone with evident insider knowledge of the “entertainment industry” — Ent Lawyer (Ent=Entertainment), who says he’s never been sued. He is described by The Daily Beast as having a track record of accuracy.
Nothing is as it seems. I report, you decide.