Norman Moore, Dictionary of National Biography… (1912)
“ Ludlow was a small, slightly built man of gentle manners. He had a finely shaped head and brown eyes of peculiar brightness. He was active in mind and body to the end. The 'constans et perpetua voluntas' of Justinian animated his whole life. He was always ready to sacrifice everything in support of his principles. His reputation for knowledge of the part of the law which interested him was high. He was learned in both men and books, and knew more than a dozen languages. His political creed was based on faith in the people. ”
