Yes, thank you Chempat, that is he. I have all his family information, wife Emma Saufferer, children, life in Piqua, Ohio, obituary etc.
His Scottish birth record has no middle name, and yes, he appears to have given himself a middle initial, although it is a 'J', not a 'G', which is a transcription error.
However, he was a textile dyer in Scotland, and continued in this profession in America. He could not have been him on the ship since he married Emma on the 22nd of December 1887 in Scioto.