Vous remercier beaucoup! I had not really intended to post a query -- I was just expressing my surprise and delight at actually finding a relative mentioned.
However, since you mention it, I really am overdue for more thorough research into this area of my family's genealogy. I would appreciate receiving the information that you mentioned concerning the Landroche connection.
Thank you also for mentioning the name of Ghislaine Macchabée. I will definitely contact her, also.