Brian O'Neill (1604-1617) (1604–1617) Parents Catherine O'Neill, Countess of Tyrone Hugh O'Neill, Earl of Tyrone Children Siblings Conn O'Neill Shane O'Neill Ellis MacDonnell, Countess of Antrim Henry O'Neill Sarah O'Neill Margaret O'Neill Catherine O'Neil unknown daughter O'Neill Hugh O'Neill, 4th Baron of Dungannon