I don't have specific info on Julia for you, but I can't help wonder if our family trees aren't connected on some branch :) I'm researching Rethmeyer (many variations) who came over from around Frille in NordRhein-Westfallen, Germany, which is near a town called "Minden". (There may also be some from Strousburg - not sure of the spelling)
My branch of the family settled in and around Cumberland, Indiana (near Indianapolis, Marion County). There are several generations of men in this line with given names of "Christian Frederick" in all it's variations.
I think some of the relatives moved into Illinois and from there I'm not sure.
Does any of this fit with your ancestors?
I'd be glad to share any info I have!
Jody (Redmyer) Waltzer