I was on the lawn of the U.S. Capitol along with many thousands of others listening to Pope Francis’ address to Congress on Sept. 24, when he singled out and praised Dorothy Day and the Catholic Worker movement. With the mention of her name, the murmured question, “Dorothy Day, who’s she?” was audible over the scattered applause and cheers of the few who know her and who share the pope’s good opinion of her. As a lifelong Catholic Worker who knew and worked with Dorothy Day in my youth, I watched with interest, amusement and some trepidation as over the next hours the worldwide media rose to the challenge of answering that question.