I have two points to raise regarding Moriz and Wally Violin's children:
(1) You give Genovefa's name incorrectly as "Genovesa"
(2) To the best of my knowledge, there was no third child (Raphael). I have worked on Violin's extensive correspondence between the 1900s and 1930s, and there is no sign of a third child (which in view of the early death of the second child [Karl] would certainly have been greatly celebrated), and I have consulted with one of Genovefa's adopted children and she assures me Genovefa never spoke of a second sibling.
Ian Bent
idb1@columbia.edu