John H. Haaren, Famous Men of the Middle Ages… (1904)
“ The poorest people were called serfs. They were almost slaves and were never permitted to leave the estate to which they belonged. They did all the work. They worked chiefly for the landlords, but partly for themselves.Having been a robber himself, Rollo knew what a shocking thing it was to ravage and plunder, and he determined to change his people’s habits. He made strict laws and hanged robbers. His duchy thus became one of the safest parts of Europe.The Northmen learned the language of the Franks and adopted their religion. ”
