Well, I'm very puzzled now .... I guess that's what happens when one makes assumptions.... Doesn't mean that Wilhelm isn't connected by marriage of a sister or sister in law .... But it does add to the mystery with Minnie's maiden name being Rapin... Could she have been married once before? Or because Wilhelm was traveling with her was it better to say he was her brother in law... Since she was traveling alone as a woman with kids? Or... Another thought... Had Jacob been married before, and that's where the connection is? Sooooooo many questions!!!
One thing I know for sure is that Wilhelm Bojaryn was living in Bulmke too... It's on my grandfathers birth certificate. So there definately is a connection ... Just what it is, who knows. We might be related yet :-)
Good luck in your search... If anything else comes up in mine I'll let you know. :-)