German naming conventions put the saint’s name first, often the same for every son, then the name they were actually called by. It does make for a lot of confusion. It would help if there was a standard entry, i.e. both saint’s and called names in the same field as “Proper first name” and the called name as “Preferred”. In America, English speaking record keepers often recorded only the saint’s name making these folks very difficult to differentiate and trace.