On the 1880 Census (which you currently can search for free on
Ancestry.com)
John Lewis with wife Martha is listed as:
John G. Lewis age 34 born Wales. Occupation Mason. Residence Hughestown,
Luzerne County, Pennsylvania. Census Enumeration District 139. Page 285B.
Wife Martha Lewis born Wales.
But it lists only Mary A. 9, William A. 7, as children and shows Peter, 22 as
brother of John.
However, if you do the search just on John Lewis b. Wales, without martha,
you get about 75 hits, and you might want to try that and see which ones look
more promising. Just go to
Ancestry.com and scroll down to the list of Census
years on the left side of the screen, click on 1880 and then do your search on
the new screen that comes up.
Also go to Immigrant Ships Transcribers Guild and halfway down the opening
page is a free find search engine where you can put in John Lewis and search
the entire site. But be aware that the ISTG has not transcribed all the ship
manifests there are.
Charnee Smit