Conn Ó Néill (sometimes anglicised as Conn/Constantine O'Neill) (Ireland, Leinster, Archbishopric of Dublin, Parish of Saint Catherine - ?), was the titular head of the Clanaboy O'Neill dynasty.
He was the only son and successor of the previous Head of the House, Phelim (Felix) O'Neill by his first marriage to Catherine Keating.
He lived in Dublin, County Dublin.
Marriage and issue
He married Cecilia O'Hanlon (Ireland, Leinster, Archbishopric of Dublin, Cashel, daughter of Captain Féilim Ó hAnluain (in English Phelim or Felix O'Hanlon) and wife, and had issue, three sons and six daughters:
João O'Neill (in Irish Seán Ó Néill, in English Shane/John O'Neill), passed to Portugal with his brothers in 1740 for political and religious motives, married and had issue
Félix O'Neill (in Irish Féilim Ó Neill, in English Phelim/Felix O'Neill), passed to Portugal with his brothers in 1740 for political and religious motives, married and had issue
Carlos O'Neill (in Irish Cathal/Séarlas Ó Neill, in English Charles O'Neill), passed to Portugal with his brothers for political and religious motives, married and had issue
Annabela O'Neill, married to ... Broghil and had issue
Catherine O'Neill, married to Terence MacMahon and had issue
Sara O'Neill, unmarried and without issue
Alice O'Neill (in Irish Ailís Ní Néill), unmarried and without issue
Anna O'Neill (in Irish Áine Ní Néill), unmarried and without issue
... O'Neill, without further notice, possibly died young
