Peter Bradford Benchley, author of Jaws, is the husband of a fourth cousin, once removed.
Louisa May Alcott, author of Little Women, is a sixth cousin, four times removed.
Harriet Elizabeth (Beecher) Stowe, author of Uncle Tom's Cabin, is a fifth cousin, five times removed.
Mary Margaret "Margaret" Truman, daughter of President Truman, author of Harry S. Truman, a critically-acclaimed biography of her father, and supposedly author of the Capital Crimes series (e.g., Murder in the White House, Murder in the Supreme Court, Murder at the Kennedy Center, Murder at the National Cathedral), although ghostwriter Donald Bain professed to having written the novels, is a half-twenty-first cousin, twice removed.
Emily Elizabeth Dickinson, poet, is a seventh cousin, four times removed.