About three months ago I answered an inquiry concerning Mr. Byrne that came to me via personal e-mail. I was able to supply an updated e-mail address for C.A. Lloyd, and literally within a day I heard back that the persons involved had e-mailed C.A. and that he had immediately responded. So at least as of April of this year, C.A. was doing well.
You are correct that C.A. had a stroke, the seriousness of which is unknown to me but apparently not disabling. He and his wife have sold their home and now live with a daughter, at last report. He changed his e-mail address; the address I provided, and which proved valid, is firstname.lastname@example.org.