René de La Croix, count de Castries was a French historian and a member of the House of Castries. He was the sixteenth member elected to occupy seat 2 of the Académie française in 1972. He wrote under
The House of la Croix de Castries is a French noble family from Languedoc. The city of Castries in the Caribbean island of Saint Lucia was named after one of its members.
Henri de La Croix de Castries, 5th Comte de Castries