My ggrandfather, Johannes Paul Kellner, came to Brazil at 1850, from Germany. In a book I read that he was born in Braunschweig (Brunswick). According to a family album, he was born at "Schleweke" (I didn't find this city in any atlas). He returned to Germany at 1861, to get married. My ggmother was from Möckern, a small city near Magdeburg. So, I think he lived in this region. I'm trying to know where he was born.