I'm taking a longshot here in hopes that TUGEND/TUEGEND is a shortened version of TUGENDHAFT.
I am researching TUGEND Henry and Katharina, found on the 1870 and 1880 US Census reports for Wisconsin. A daughter Louise married an OTTO, Louie.
I would like to hear from interested parties. I am searching for the usual--Bible data transit records, church records and ancestral photos.