Diane Middlebrook was a professional writer, and a former Professor of English at Stanford University. She was a part of Stanford's English faculty for four decades, a leading feminist scholar, and one of the founders of feminist studies at Stanford. She is best known for her biographies, especially, Ann Sexton, a Biography, Her Husband, a biography of Ted Hughes and Sylvia Plath, and Suits Me: The Double Life of Billy Tipton.
She was a founding trustee of the Djerassi Resident Artists Program, an interdisciplinary arts center in the Santa Cruz Mountains. She was a member of the Panel on Biography for the 1995 Pulitzer Prize, and chaired the Non-Fiction Panel for the National Book Award in 2004.
Diane passed away from cancer in 2007.