Oh yes, that is a Rose that I've tried looking into. That was her second marriage in 1923 to a man named John O'Reilly. Her first marriage was in 1897 (when she was 17) to a William Houghton, who was a private in the 84th Royal Artillery. They had two children - William and Catherine. William was born in England and Catherine in Scotland. I find them living in England in 1901 (sans her husband who I assume is doing army stuff) but I can't find them anywhere in 1911. I next find Rose in 1923, marrying John. She notes herself as a widower although I have been unable to find a death cert for William because it seemed a very popular name.
Rose died in 1932 of cardiac failure - which is actually interesting now that I think about it because my great uncle died in his forties of cardiac failure and my grandfather (who is in his 70's) has had trouble with his heart in the past few years.
I found her birth cert (she was illegitimate!). She was born to George Hannah and Catherine Kerr on September 15th, 1878, 15 Clyde Street, Glasgow. Her parents later married and had other children. I did some research on her parents. George's parents were Arthur Hannah (1831, Down, N. Ireland - 1888, Scotland) and Rosanna. Arthur's parents were George Hannah and Rosanna McCall, who would have lived their whole lives in N. Ireland I assume. So there is that Northern Ireland connection there. Catherine Kerr's parents were John Kerr and Rose Gorman (1831, Ireland).
What do you think? I would like to know more about William Houghton - maybe Rose had an affair whilst her husband was away? They did seem to move about a bit. I just thought that perhaps if William died in and around 1918 Rose took the opportunity to try and find her son? I know that's a lot of guessing with no facts but it's an idea.