Klavdia was born about 1923. She passed away in 1969 from cancer.
In November 1942, Klavdia met her future husband, Andrei. She was a laboratory assistant in the chemistry department in the same Central Factory Laboratory in which Andrei worked as a research engineer in the metallurgy department.
Three children were born of their marriage: in 1945, a daughter, Tatyana; in 1949, a second daughter, Lyubov, and in 1957, a son, Dmitry.
In 1968 Klava’s health deteriorated rapidly, the result of stomach cancer that metastasized because her doctors had been unable, even with X-rays, to detect it; Sakharov may have considered their incompetence, which verged on malpractice, symbolic of the larger failings in Soviet society he deplored.