What is your source for Koltoz, Pommern being his
town of birth?
Do you have his obituary? Church burial record? German language obituary - i.e. where there any German language newspapers in Seward?
I presume the family was evang. luth?
Have you checked the church records in Ottawa, LaSalle, IL
for his church marriage record - it should list his parents
names which will help give you additional corroborative (sp?) proof when you find his baptismal record in Pommern.
Tell us what you have checked on or researched so we know
what to suggest or recommend to you.