Letendre Family Genealogy Forum
My books are in French also. If you look at the books my number is 1189 in the fifth volume.
This is the first I hear of a Letendre castle. I have been to France several times but not lately. I was surprised when we had a foreign exchange student stay with us one summer from France. When he returned he did a search on some type of computer base in France on the name Letendre and came up with only about 20 names.
Good luck in your researches and let me know if you discover anything on the castle.