Hi, I too decended from the O'Briens. my maternal grandmother was Mary bridget O'Brien from Cork, Ireland. Her parents were David O'brien and Hannah Daly.
My Grandmother married an English soldier called George Pearcey and had many children. Their youngest, James. For some reason, and at a early age. joined the merchant navy. This is back in the 30's. He ended up in Australia, when his ship sank. Hospitalised, he married a nurse, we only know as Jean. they had two children, and we know the son, Micheal drowned. Jennifer Mary O'Brien was the childs name. My uncle had taken his mothers maiden name as he was under age to join up. (We were told). I have been trying to trace Jennifer for many years. Her father passed in 1969 and my mother (his sister) in 1997. I would love any information that may help me to trace her. I think she would have been born in the late 40's. Thank you in case you can help. Jackie