The heir to the Washington Post fortune, William W. Graham, committed suicide last week, echoing his publisher father's death in 1963.
Graham, a 69-year-old lawyer, was found dead last Wednesday, according to an obituary published in the Post, the Daily Mail reported.
His father Phil, who was publisher of the newspaper for 17 years, killed himself back in 1963.
Graham's mother Katharine then served as publisher for the next two decades.