The information you give came from me but I was wrong. You'll understand why. This Cazzaniga was not the son of Lodovico Cazzaniga and brother of FG Cazzaniga; he was the brother-in-law of FG Cazzaniga, whose wife's maiden name was also Cazzaniga! I was corrected on this point only three days ago while at lunch with two of FG Cazzaniga's children, Carla and Claudio.