William, abbot of St. Thomas of the Paraclete. [Letter to Ingeborg of Denmark, queen of France, 1195 (2)] in Recueil des historiens des Gaules et de la France 19: 315-16

[Letter to abbot William of St. Thomas of the Paraclete from Ingeborg of Denmark, queen of France]
A letter of encouragement from the abbot to the queen which includes a gentle reproach that she has neither written nor sent to him.
Online at Epistolae (See also Bibliographia record).