Samuel Domnik 1879

Trying to find info on my GGG Grandfather Samuel Domnik who left Hannover area in 1879 and emmigrated to US on the SS MOSEL landing in NY NY on 24 November 1879, his occupation was Weaver, he traveled with his wife Julianne, son Jacob and three others, Gottliebe, relationship unknown, Anna a 14 yr old girl and a baby born and died at sea.
I have found the graves of Samuel, Julianne and Jacob but nothing on the rest of the passengers who traveled with them.I also have no information on their lives in Germany and any possible family in Hannover who they left behind in 1879.any ideas on how to find this information would be greatly appreciated.
Barbara in SC