Complex sentence: Following the collapse of the Monarchy, all Austrian titles were abolished by law in 1919 and from there on the names consists only of prename and surname, without von or title, scilicet "Franz Ferdinand Hohenberg".
Split into simpler sentences: Following the collapse of the monarchy, all Austrian titles were abolished by law in 1919. From then on, names officially consisted only of forename and surname, without von or titles, scilicet "Franz Ferdinand Hohenberg".