« Reply #3 on: Sunday 19 November 17 03:20 GMT (UK) »
It might be helpful to you to use a European map of surname distribution. Several are listed on this Wiki page:-
https://www.familysearch.org/wiki/en/Surname_Distribution_MapsI don't know about modern times but in the 19th and early 20th century Germans on the European mainland also had one or two given names of the godfather sponsors which were officially written in baptism records before the given name, thus the father Heinrich Krebs could be listed as Jacob Christian Heinrich Krebs and you might not find him on some databases by just quoting Heinrich as the given name simply because that particular database will only pick up the first given name.
Best Wishes.
Aberdeen: Findlay-Shirras,McCarthy: MidLothian: Mason,Telford,Darling,Cruikshanks,Bennett,Sime, Bell: Lanarks:Crum, Brown, MacKenzie,Cameron, Glen, Millar; Ross: Urray:Mackenzie: Moray: Findlay; Marshall/Marischell: Perthshire: Brown Ferguson: Wales: McCarthy, Thomas: England: Almond, Askin, Dodson, Well(es). Harrison, Maw, McCarthy, Munford, Pye, Shearing, Smith, Smythe, Speight, Strike, Wallis/Wallace, Ward, Wells;Germany: Flamme,Ehlers, Bielstein, Germer, Mohlm, Reupke