Charles Ponzi
Promoter; defendant
Organizer of the Securities Exchange Company. Pleaded guilty to federal mail fraud in 1920; convicted of Massachusetts larceny in 1925; died in Brazil in 1949.
The 1920 file is smaller than a modern DOJ task force. The names below are the ones the Post and the dockets keep.
Roles are taken from contemporary reporting, the federal plea, and the Massachusetts larceny record.
People
Clarence W. Barron
Publisher; public arithmetic
Head of the financial publishing house that became Barron's. His 1920 analysis of coupon volume gave the Post a market-size fact it could print.
Richard Grozier
Boston Post publisher
Publisher who backed the 1920 investigation. The paper received the 1921 Pulitzer Prize for public service for the Ponzi campaign.
Edwin C. Grozier
Boston Post (context)
Longtime Post publisher; the paper's investigative culture in 1920 sat in a family enterprise that treated the coupon story as a civic campaign.
Joseph Pelletier
Massachusetts prosecutor context
Boston district attorney during the unraveling; state larceny work proceeded alongside the federal mail-fraud case (offices and successors completed the 1925 conviction).
Rose Ponzi (Gnecco)
Spouse; contemporary witness
Appears in 1920 press accounts of the household and the surrender week. Not a criminal defendant in the mail-fraud plea.
Later textbook names (SEC staff, modern judges) use 'Ponzi' as a doctrine. They are not 1920 Boston actors.
Public-record encyclopedia. Not legal advice. Not a how-to. Graphic detail is withheld. Wars belong in a separate atlas.