Written on the back of the photograph is "married 1st of May 1891", but the names are not provided.   Sigh.   The photography studio being in Colorado is a potential clue.   The PRESCHERN family was known to be in Denver, Colorado prior to Roseburg, Oregon.   Please contact me if you are a descendant of the PRESCHERN family.   Can you identify the couple in the photograph? walt@criteser.org