Is This a Photograph of Billy Playing Croquet?

This photo, found in a shoebox of tintypes at an antique store in Fresno, California, has caused quite a stir. The owner believes it was taken near Roswell, New Mexico, to celebrate the marriage of Charlie and Manuela Bowdre (he identifies them as being on horseback). He also claims the picture includes William Bonney (inset), Tom Folliard, Sallie Chisum, Paulita Maxwell, Josiah “Doc” Scurlock, “Big Jim” French and Antonia Scurlock. The owner states the photograph was taken in early S