Hi Angie,
I've just come across your post from 2009 and I am very excited! I'm praying you will receive this message!
I am almost certain that the Patrick O'Shea you are enquiring about is my great-grandfather's brother (Daniel O'Shea). If my research is right Patrick was born in Gurrane, Banteer, Cork circa 1875. Daniel was born in 1879. Patrick and Hannah (Hurley), also from Ireland were married in the Pontypridd district (which included Llanwonno). I live close to this area. I'm Welsh born and bred and even speak the language!
In the 1901 census Patrick and Hannah lived with their first born Catherine in 68 Cardiff Road, Llanwonno, Mountain Ash. By the 1911 census they were living at 26 Napier Street, Llanwonno, Mountain Ash. They now had 7 children in total; Catherine, Mary, Timothy, John, Patrick, Hannah and Daniel (I presume he was named after my great-grandfather as he moved to Wales from Ireland if not with, then not long after, Patrick).
I would really love to hear from you to know what your connection is and to see if I can learn anymore about the O'Shea's.
Best wishes
Beth