Who are they?

If anyone has positive identification for these pictures, please let me know. Contact 

Photo 1: This wedding couple (above) is definitely not Mary Fastner and Conrad Mohelnitzky.

Photo 2: The above couple is definitely not Mary Fastner and Conrad Mohelnitzky. It is possible the mustached groom is a Ruskauff. The two pictures (Photo 1 and  Photo 2) are of the same people - but the question is, "Who are they?"

Compare this couple to the portraits below of Conrad Mohelnitzky and Mary Fastner

Photo 3: This woman could be a Mohelnitzky, Ruskauff or Whalen or friend. Printed on the back of the original: "E. A. Geist, Photographer, 8 West Water Street, Milwaukee, Wis"

Photo 4: This man's last name is Freitag (translates to "Friday" in English). He is a cousin, but it is unknown how he is related to Ruskauff or Freker families living in Germantown/Cazenovia, Wisconsin. Could it be Anton Friday (1817-1879) who married Maria Elisabeth Freker (1824-1890)? She was the daughter of Johann Heinrich Freker and Anna Maria Broxtermann.