Hi, my name is John Williams and I am a great-grandson of Benjamin and have a lot of information about him and his family. I have found him in the 1861 census in Merthyr Tydfil. He came over with (I believe his uncle and aunt) John E. and Mary Evans. They came accross on the General McClellan in 1864. Unfortunately i have not been able to find his birth cert. yet, but i'm willing to work on it some more.
John M. Williams