I have information on two children of Louis Manfred who are buried in Lind Cemetery. The Cemetery records do not show a burial for Otto, but I will be glad to do some further checking if you have an approximate year of death.
Follow this link to the Lind Cemetery transcription and you can send me an email by clicking on my name as the transcriber of that cemetery. www.wagenweb.org/adams
Click on Washington tombstone project, then on Adams County and follow down to Lind Cemetery.