"Is there some way I might see the obits for Christoph Robran/Robrahn from the Milwaukee German Newspaper?"
Sure. They're in one of two libraries in Milwaukee County, depending on the year and publisher. My ongoing efforts to create this huge project have not been to replace research, but to make it more accessible.
Otherwise, one of the public library's recommended professional researchers (retired staff) asked for my translation assistance last spring as she was collecting German clippings at $25/hr. Give them a call, try other local contacts of your acquaintance, or email me directly.
Indexing Milwaukee's German newspapers continuously since 2007 ...
Gary Rebholz, compiler/editor
"Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).