The last true owner was maybe Davis Nelson.
According to NYC records, this house was last sold in 2003, for $275K, at which point it was a boarded-up shell. In 1988 it was sold by Steven and Michael Roseboro, as heirs of Donald Roseboro, to Nelson Davis, who transferred the deed in June 2003 to a company in Staten Island called Homevester, which sold it later that month to its current owner of record, JTLG Corp. There is no record of Joseph Bradley owning this house. There records of various other properties in Brooklyn owned by various Joseph Bradleys, but nothing on Pacific St.
You can search NYC property records on ACRIS, but details pre-1990 are slim. See below for the link.
Happy New Year and good luck with your search!