Sorry for this late answer. As regarding your 2nd question I do agree with you that F. X. Schwab did not belong to the early settlers of St. Nazianz. The list of "Ureinwohner" I took my information from is undated. Most probably it was made up in the twenties (or even later). However, at that time people who came to St. Nazianz in the 1860ies were also considered to be "Ureinwohner", I would imagine.
Next week I am visiting the archives of the Society of the Divine Savior (Salvatorians) in Rome, where I found this list. I will check it, try to find out more about its origin, and send you a copy after my return.
It is interesting to see that F.X. Schwab's St. Nazianz-born child was given the name of the founder of St. Nazianz Ambrose Oschwald.