origin
One branch of this family apparently migrated from Germany to the Beresan District in what is now Odessa Oblast, Ukraine - particularly to the settlement of Rastadt - in the early 19th century; some later members of that branch apparently migrated from the Beresan District to north midwestern North America roughly between 1875 and 1925.
see also
- http://www.grhs.org/villages/beresan/rastadt.html (Koffler family is enumerated on this page)
- http://www.questforancestors.com/publications.htm (Koffler family is enumerated on this page)
- https://en.wikipedia.org/wiki/Black_Sea_Germans