hello !i think we are related ! my gt grandparents were also catherine coyle and john o'connor - my grandfather james o'connor was one of their children and he was born in belfast - he married my grandmother margaret hartigan from limerick and they came to live in london - two years ago my mother and i were in belfast and we visited one of her cousins who gave me this info and said that another relative had been tracing the family tree and i think it could have been you....it would be good to hear from you..........