Reeve's eldest brother, Charles Augustus Lindbergh Jr., the first of six children born to Charles and Anne Lindbergh, died in 1932 in a famous kidnapping — what many termed at the time "the crime of the century". Reeve's other Lindbergh siblings include aquanaut Jon Lindbergh (1932–2021), Land Morrow Lindbergh (born 1937), writer Anne Spencer Lindbergh (1940–1993), and conservationist Scott Lindbergh (born 1942), who raised rare monkeys in France. Reeve discovered later in life that her father had three other families in Germany and Switzerland.