Thank you for your help.My 99 year old aunt who just died was related to Frederick Mamerow (b. 1838/9).Frederickhad a son, another Frederick, who was born in 1868 in Kendallsville, Nobles co, according to family records.I have checked the IN census and also found out there were a series of fires over the years at the Nobles courthouse.I even looked at Christian (probably John Christian) Mamerow.But I am not certain of the relatonship of Christian and Frederick (b. 1838/9).
Since there is 20 years difference between Christian and Frederick, we could assume they are father and son.But, according to MI death records and obits, Frederick's (b. 1838/9) father was another Frederick from Mechlenburg.
There don't seem to be any Indiana records of this Frederick Mamerow (changed to Mumro).