Vicky,
on the 1880 census for Smith Co. Tx. he was born in Texas, but on the 1900 he was born in S. C. I thought he was on the 1910, but it says on his son's census as father born in TX.
I don't know to look for Cy, Silus or Cyrus MILTON. I only have found him on Texas censuses.
Thanks
Juanita