When Friedrich Kellner was four years old, his family moved to Mainz where his father became the master baker at Goebel's Confectionery (Goebels Zuckerwerk).
Kui Friedrich Kellner oli nelja-aastane, kolis tema pere Mainzi, kus ta isast sai meisterpagar Goebels Zuckerwerk'is ("Goebelsi kondiitriäris").