MB(1) is the author of "Reference guide to science fiction, fantasy, and horror", and uses Robert Reginald as a pseudonym. CK shown relates to this author.
MB(2) is Dr. Michael Burgess, a Canadian writer on Federalism, born 1949.
MB(3) was an Oregonian, born 1944, died 2010.
MB(5) was the pseudonym of the late historical novelist Noel B. Gerson.