My G-G-G-Grandfather is Denis Sullivan of County Cork. He married Angel (Angela?) McCarthy and had my G-G-Grandmother, Agnes Matilda Sullivan in 1874 in Ireland. She later married John Sheehan (DOB 1873) of Castlemaine (son of Jeremiah Sheehan and Joanna Sullivan). Together they had my Grandfather, Denis Anthony Sheehan (born in the US). Denis Sheehan later married my Grandmother, Margaret Mary Armstrong, daughter of Mary Catherine O'Donnell and Francis Xavier Armstrong (from county Mayo).
I am looking for further connections to any of these relatives.