Joan Butler Peerage person ID=73418 (d. 1585) Parents Lady Joan Butler James Butler, 10th Baron Dunboyne Children Walter Eustace William Eustace James Eustace, 3rd Viscount Baltinglass Richard Eustace Edmund Eustace Eleanor Eustace Joan Eustace Thomas Eustace Siblings Pierce Butler Thomas Butler Edmund Butler, 1st/11th Baron Dunboyne Ellen Butler Partners Rowland Eustace, 2nd Viscount Baltinglass