OK - JUST AN ADDITIONAL
I just searched Wayne County records, and can see that Elizina or Elizier Watts and John Pratt had two children, John Dec 30 1853 and Harrison on Dec 30 1855. That means that it is unlikely that Elias who is born in 1853 would be Nancy Elizia's child. He is more likely to be Mary Porter's son.
Also, his death register (not certificate) does not indicate a mother.
Problem is, the records only date back to 1853, and I think it is possible Elias was born in 1852 as he is not on the records at all. So the question is still there, just more unlikely.
Please send me any information if you have it.