2. Eisenhower & Nixon
Richard Nixon and Dwight Eisenhower is set of US Presidents have descendants who are married to each other.
Richard Nixon was the 37th president of the United States, serving from 1969 to 1974. He had two daughters, Tricia and Julie.
Dwight D. Eisenhower was an American military officer and statesman. He served as the 34th president of the United States from 1953 to 1961. He had only grandson David Eisenhower.
So, Richard Nixon's daughter 'Julie' and Dwight D. Eisenhower's only grandson 'David Eisenhower' got married in 1968.
The couple had 3 children, Jennie Elizabeth, Alexander Richard and Melanie Catherine Eisenhower, who are therefore grandchildren of President Nixon and great grandchildren of President Eisenhower.