I'm very sorry to read this. I always enjoyed Bob's posts, and I opened this thread looking forward to his latest update. I'm sorry he didn't have longer to enjoy life in retirement. Our time is much briefer than we think. RIP, Sir.
P.S. Just to add that a Google search also reveals the passing of a Penelope Mackie in Dec 2022, Head of Philosophy at Nottingham (and an ex Assistant Professor of Philosophy in the US), who was married to a Robert Frazier. Penelope appears to be the subject of some of Bob's portrait photos, so I am assuming they were married.