Susan, it was good to hear from you again. My OTT's from La Crosse and, eventually Milwaukee (that's me!), came originally from Baden. They settled primarily in southern Indiana. My great-grandparents, Ferdinand and Anna Maria (ROTH) OTT had two sons, John and William, that moved to the La Crosse area in the late 1890s and early 1900s. The rest all remained in Indiana. There was another OTT family in La Crosse that had been there significantly longer. My family was not related to these earlier OTT's. Additionally, the ROTH's (Anna Maria's parents and two uncles) left southern Indiana and moved to the La Crosse area in the 1850s/60s, but no OTT's went with them at that time. The ROTH's came from Bavaria in 1854, but I know of no connection to the OTT family that was in La Crosse in the 1800s.
I would invite you to visit my website at:http://homepages.rootsweb.com/~jackott/index.htm
Good luck in your research.