I’m moving the email service for family members away from Google to a new service provider. Current users will get information shortly. If you are a Sonderegger and don’t have an email address @sonderegger.com yet, check out the details.
After a long time I finally found some time to put the family tree up again. You can find currently around 1700 persons from our history. Check it out. I hope I’ll find also some time to update it in the near future with additional data I got over the last few years.