On 30 November 2000, Sir Evelyn married the American lawyer and entrepreneur Lynn Forester, who was the head of the Luxembourg-based wireless broadband venture FirstMark Communications Europe and the former wife of Andrew Stein, a New York City political figure who served as the last president of the New York City Council. By this marriage, he has two stepchildren, Benjamin Forester Stein (b. 1985) and John Forester Stein (b. 1988). On the announcement of the marriage, the de Rothschild couple were invited to spend their honeymoon at the White House, where they agreed to stay one night.