The Lausiac History is a seminal work archiving the Desert Fathers of Egypt, written around the year 419-420 by St. Palladius of Galatia, at the request of Lausus the Eunuch, chamberlain at the court of the Eastern Roman Empire Emperor Theodosius II. It is broken down by each chapter, giving the hagiographical account of each monk. During the height of the medieval period it was an extremely popular Christian text in both the East and West, and remains a significant part of the Eastern Orthodox Liturgy.