Is it Margaret O'Neill that you are looking for?
I have John(Jack) Lyons(1887) and Margaret O'Neill(1888), they were married circa 1907. Lived in Rylands (near Bunclody (Newtownbarry)), Wexford in 1911, with their firstborn Ellen age 10months.
John Lyons parents may have been Matthew and Ellen (these are also the names of their first two children) (info on 1901 census)
As for Margaret O'Neill there is little or no information about her, where born? who were her parents? Living family tell me that they weren't ones for registering births?! (only baptism lines) so maybe its something their parents did too? But there should be a marriage for them somewhere, my problem is I don't know if they even married in Wexford, - Dublin and Gorey have been mentioned but not sure if it is related to Margaret so thats not much help!
the 1911 census does state that Margaret was born in County Wexford.
Here's the 1911 census entry-
www.census.nationalarchives.ie/pages/1911/Wexford/Newtownbarry/Ryland__Lower/681622What I didn't notice mentioned in earlier thread is the fact that they are listed as tramps in a lodging house. This being the case it's possible the census details (on which you are basing your searches for them in 1901, marriage, etc.) may be inaccurate.
How did you find out Margaret's maiden name was O'Neill? children's birth certificates? family stories?
I see a marriage in 1909 for a John Lyons - Jan./Mar.1909 Gorey registration district volume 2 page 734 with a Margaret O'Brien on the same page- might be woth investigating further if you haven't done so already.