Late in the day but finally got to read this book, which I found to be comprehensive in its coverage and very readable. Supplemented it by DVD viewings of 'The Genius of Lennie Breau' Canadian TV documentary and some film footage I have of the various CBC Winnipeg sessions.
Strange that the murder was never fully solved and remains a cold case. That last marriage sounds like a nightmare and indeed Lennie looks pretty haunted and withdrawn on some of the later film footage e.g. that taken at Tal Farlow's house. On the other hand, it may have been a miracle that he even survived beyond the mid 1970s and made that 'comeback'.
Wish those RCA albums would be reissued again for wider distribution. They are on Spotify but it would be nice to have CD quality.