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 issueFélix 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 issueCarlos 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 issueAnnabela O'Neill, married to ... Broghil and had issueCatherine O'Neill, married to Terence MacMahon and had issueSara O'Neill, unmarried and without issueAlice O'Neill (in Irish Ailís Ní Néill), unmarried and without issueAnna O'Neill (in Irish Áine Ní Néill), unmarried and without issue... O'Neill, without further notice, possibly died young