David Kaczynski
brother of convicted serial bomber Ted Kaczynski
David Richard Kaczynski (born October 3, 1949) is an American charity worker. He is the younger brother of the domestic terrorist and mathematician Ted Kaczynski, also known as the Unabomber.
His memoir, Every Last Tie: The Story of the Unabomber and His Family, details both his relationships with his brother and their parents, and his and his wife Linda's decision to report their suspicions of Ted to the Federal Bureau of Investigation (FBI), which ultimately led to his arrest in 1996. The decision prompted Ted to cease all communication with his family, including rejecting all of David's attempted correspondence until Ted's suicide in prison in 2023.
Biography
Early life
Kaczynski graduated from Columbia University in 1970. Between December 1966 and May 1967, he wrote ten articles for the Columbia Daily Spectator and was promoted to the associate news board in March 1967. Kaczynski worked as a schoolteacher in Lisbon, Iowa, in the mid-1970s.
Like his older brother, David Kaczynski rejected society and lived for an extended period in isolation. In 1984, Kaczynski bought a plot of land in remote Brewster County, Texas, dug a hole in the Chihuahuan Desert soil, and partially covered the opening with metal sheets to live in while he built a cabin nearby. In 1990, following the death of his father, he returned to society and married his former high school sweetheart, Linda Patrik.
The public source identifies “David Kaczynski” as brother of convicted serial bomber Ted Kaczynski. This brief keeps that definition visible, then builds a research path around David, Kaczynski and brother.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 31, 2026. The linked authority identifier is Q5235812. VIAF identifies the subject as 316390907. The Library of Congress control number is no2015065580. 3 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1949, 1996, 2023 and 1970.
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This entry incorporates text from “David Kaczynski” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.