John C. at The Rhodes School, the small Manhattan college-preparatory school, in his 1970 yearbook portrait. He was sixteen — preparing for the law-school path that would take him to the US Attorney’s Office.
John C. Jeannopoulos was the middle of Constantine and Sophie’s three children — born August 13, 1953, a full decade after his older brother Peter — and the lawyer of the family. He served as an Assistant United States Attorney and later as Associate General Counsel at Trial Lawyers Care, Inc., the organization that provided pro bono legal assistance to victims of the September 11 attacks. (The same Manhattan that had given his Polish refugee mother a scientific career and his Smyrna refugee father a medical one was, in his generation, the city to which a lawyer dedicated his pro bono hours after its worst day.) The middle initial C. almost certainly stands for Constantine, after his father.
He never married and had no children. His long-term partner of decades was Susan McCarty, LCSW, a Hunter College (CUNY) faculty member; the “wife” wording that appears in Sophie’s 2005 obituary was a family informality, kindly meant. With no descendants of his own he is a terminal branch on the family record.
He died in 2026, age approximately 73.