My next step is to learn more about the specific case. Paul Freund died in 1863 in Davenport, Iowa. This court case likely doesn't mention anything about his death and I already have his estate record. However, it may shed light on some of his business dealings in Davenport. Paul is one of those individuals who died relatively young and did not leave behind much in the way of information about his origins. He was a German native and his origins while yet to be researched, have partially been discovered through tracing two of his siblings who also settled in Davenport.
Another approach to tracking immigrant origins is to look at individuals with whom the ancestor did business or associated. It seems doubtful that Irish names like Michael and Bridget Brophy will hold clues in that regard. However--the names of lawyers and others involved might hold clues to the Freund's origins that would have been particularly helpful if none of his siblings had immigrated.