He was married to Lucy Helmore for a long time (4 sons) and I think she had some addiction issues. Very sad, she seemed like a nice lady.
None of us can really know of course, but I always thought that he and Jerry appeared very happy at the time and a genuine match, but obviously Mick Jagger had the edge in some way. I think JH may have in the longer term been a bit "full on" for someone who has found happiness as a Sussex squire (and is apparently pathologically shy offstage)
I find Murdoch utterly and profoundly unappealing, not because he's 91 and has looked like an ill tempered tortoise for decades, but because he is not a good influence in the world. I genuinely wish Jerry well, but feel that money was at the root of this strange match.