Have you heard of this man?

That is Walter Hines Page. In the 1920s, two different Pulitzer Prizes in biography were awarded for books about him. He was a writer, editor, and publisher, his main historical distinction seems to have been helping bring the USA into World War I:

Page was appointed U.S. ambassador to the United Kingdom by President Woodrow Wilson, whom Page had befriended in 1882 when Wilson was a young lawyer starting out in Atlanta. Page was one of the key figures involved in bringing the United States into World War I on the Allied side. A proud Southerner, he admired his British roots and believed that the United Kingdom was fighting a war for democracy. As ambassador to Britain, he defended British policies to Wilson and helped to shape a pro-Allied slant in the President and in the United States as a whole. One month after Page sent a message to Wilson, the U.S. Congress declared war on Germany.

So far in the 2020s the only subject for a Pulitzer Prize-winning biography has been Susan Sontag.