Cathy,   It is also possible that your Otto had just one name. I have a great grandfather born in Bad Frankenhausen in 1818 who has one name only, Albert Pietschmann. That is how he was baptized. His three siblings each had 3 names. His mother had 3. His father had 2. Six of his children had 3 names but his seventh child had 4 names and the eight and youngest had 2 names only. The youngest was named after a prominent hymn writer, Paul Gerhardt.   So isn't that what makes our research so interesting?    LaVerne