Ellen Herndon Arthur, daughter of President Chester Arthur, in 1883
President Chester Arthur’s sister Mary McElroy took care of the widowed commander-in-chief’s only daughter, whom he kept as far away from the press as he could. His private life was “nobody’s damn business,” Arthur once said, but we know this much: Nell had a Scottie named Tot and did a lot of volunteer work—she helped serve Christmas dinner to disadvantaged children and oversaw the collection of 20,000 items of clothing and toys for a holiday gift drive run by St. John’s Guild of the Holy Child.