Terry Brown, a professor of biomedical archaeology at the University of Manchester, said there were clues that these bog bodies were more than they seemed.
On the female skeleton, "the jaw didn't fit into the rest of the skull," he said. "So Mike [Parker Pearson, of Sheffield University] came and said, Could we try to work it out through DNA testing?"
Brown sampled DNA from the female skeleton's jawbone, skull, arm, and leg. The results show that bones came from different people, none of whom even shared the same mother, he said.
The female is made from body parts that date to around the same time period. But isotopic dating showed that the male mummy is made from people who died a few hundred years apart.
The reasoning behind such a scheme might never be known. It may have been symbolic or esthetic, or someone may have fancied themselves a "Dr. Frankenstein" of the era. Link
(Image credit: Mike Parker Pearson, University of Sheffield)