I continue to research the family of R' Aaron b' Moshe Halevy HOROWITZ.
I have found a reference to the effect that the *two* title pages of Avodath Halevy (published posthumously by his sons and grandson in Lemberg in 1862) contain information about R' Aaron b' Moshe Halevy HOROWITZ's family tree.
I would very much appreciate if you could contact me if you happen to have a copy of this book or if you know where I can find one. Please respond privately.