I now have conflicting reports regarding the year John L Jones arrived in the US. One report is 1848 and 18 years old and the other has him arriving on December 19th, 1856. Both stories state he was shipwrecked off the coast of New Jersey and then traveled to New York City. In the story that has him arriving in 1856 he is reported traveling with William Williams also from Angelsey (I really need someone to have an uncommon name) on a ship named the New Yorker. The US Censes records for 1860, have his age listed as 30 and the 1870 record lists his age as 39, so I think the 1830ish birth year should be close. In looking at the very faint 1860 cenus it appears his middle name maybe be Lloyd.
As for Ellen Jones, she was reported to be born in Conway Caernarvonshire, Wales in August of 1833 and died Jan. 12, 1916 in Slatington, PA, US. Her father was Peirce Jones.
I know it isn't much to go on, but I'm learning new things on the this path.
Thank you for your help. I doubt I'm supposed to ask this, so don't feel compelled to answer, but are you in Wales?