Lewis Henry Morgan

Born in 1818 near Aurora, New York, Lewis Henry Morgan trained as a lawyer and built much of his career in Rochester. Alongside his legal and business work, he developed a deep interest in the cultures and social systems of Indigenous peoples, especially the Haudenosaunee (Iroquois), and that interest led to some of the foundational work of early anthropology.

Morgan is best known for studying kinship terms and family structures in a systematic way. His research helped establish kinship as a major field of anthropological study, and his book Systems of Consanguinity and Affinity of the Human Family became especially important for later scholars. He also wrote League of the Ho-de-no-sau-nee, or Iroquois and Ancient Society, works that brought together close observation, wide comparison, and large historical theories.

Some of Morgan’s big evolutionary ideas reflect the limits of 19th-century thinking and are read more critically today. Even so, his influence remains strong: he is widely remembered as a principal founder of scientific anthropology, a careful recorder of Haudenosaunee life, and a writer whose questions about family, society, and human history still echo in the field.