La Petite Larousse states that d'Ailly was a Protestant house of Picardy. The names of the Huguenots generally spelled it Dally. Many of the Huguenot families went to Tournai and in the early 1500's went to England where the earliest record is in Kent in 1507. The records of the Huguenot Society of London records many settling near the Threadneedle Street where the name Dally is spelled as: Dallier, Dalle, Dallee, Daillie, Dailli and Dally. I am related to a Jehan Dailli, son of Simon, native of Tournay (Tournai), married to Marguerite, daughter of the late Jacques Madon, native of Tournay. In fact the information from the Huguenot Society was from Mrs. J. F. Wheatley, a research assistant at the Society (and whose maiden name was Dalley). One Dally in France, Antoine had a daughter who married the son of Admiral Coligny. A Louis Dally and Charles Dally died in the battle of St. Denis in 1567, fighting for Henry of Navarre. Tom Dally