Caesarius of Nazianzus, physician and politician of the 4th century, and the younger brother of Gregory of Nazianzus
:For others with this name, see Caesarius.
St. Rusticala (b. at Vaison, 551; d. 628) was abbess of the monastery of St. Caesarius at Arles.
In 534 John, being consulted by Caesarius in reference to Contumeliosus, wrote to Caesarius, to the bishops of Gaul, and to the clergy of Riez, directing the guilty bishop to be confined in a monastery.
The Institutes were meant to help Castor to establish a coenobium following the model of Egypt, in contrast to the existing monastic life in Gaul, which included the work of Martin of Tours and Caesarius.