Joan fitz John Peerage person ID=151411 (b. 1250) Parents Isabel Bigod John Fitzgeoffrey Children James Butler Thomas Butler, 1st Baron Dunboyne Richard Butler Gilbert Butler Edmund Butler, Earl of Carrick Anne le Botiller Theobald Butler Nicholas Butler John Butler Siblings Margaret de Lacy Maud de Lacy, Baroness Geneville Aveline fitz John Maud FitzJohn, Countess of Warwick Richard fitz John, 1st and last Lord FitzJohn Isabel fitz John Walter de Lacy Sir John fitz John Partners Theobald Butler, 4th Chief Butler of Ireland