Finally found the marriage of my gggrandparents - Rock Island Illinois, 1855, at "St Mary's Church". They were Irish Catholics from Co Wexford but I don't know where or when they left to go to US. I don't know whether they stayed in Rock Island or moved on. Catherine "Kate" Maher and Michael Downes had a daughter, Annie, born 1856 in US but Kate died and Michael returned to Adamstown, Co Wexford with infant daughter.
Does anyone know where St Mary's church is? If Kate died in Rock Island where might she be buried? I understand there was a census in 1855 - if so exactly what date was it? What was the usual way into Illinois from Ireland? And lastly any ideas why they should have gone to Illinois - some Downes went to Canada and, I think, Ohio?
As usual more questions than answers are thrown up by each new "find"!