This is the wrong forum to discuss people from Canton Bern so contact me at my email if you want to discuss this further. the Church of the Latter Day Saints has microfilmed the christening records from Erlach, and you should be able to find him in those records if the birth date is accurate. Here is the film you want:
Evangelisch-Reformierte Kirche Erlach (Bern)Taufen 1743-1860FHL INTL Film2005910
These films can be viewed at the library at Salt Lake City, or, for a small fee, sent to a Family History Center near you.Details are on the LDS website, www.familysearch.org.
Of course the records are handwritten in German, and in German script which is a little difficult to understand, but you will probably be successful.