Ellis MacDonnell, Countess of Antrim (died 1665) (d. 1665) Parents Catherine O'Neill, Countess of Tyrone Hugh O'Neill, Earl of Tyrone Siobhan O'Donnell Children Randal MacDonnell, 1st Marquess of Antrim Lady Anne MacDonnell Lady Alice MacDonnell Lady Catherine MacDonnell Lady Mary MacDonnell Lady Sarah MacDonnell Alexander MacDonnell, 3rd Earl of Antrim Lady Rose MacDonnell Siblings Shane O'Neill Conn O'Neill Henry O'Neill Sarah O'Neill Margaret O'Neill Brian O'Neill Catherine O'Neil unknown daughter O'Neill Hugh O'Neill, 4th Baron of Dungannon Partners Randal MacDonnell, 1st Earl of Antrim