John Fitzgeoffrey Lord of Shere and Justiciar of Ireland (1206–1258) Parents Aveline de Clare, Countess of Essex Geoffrey Fitz Peter, 1st Earl of Essex Children Sir John fitz John Isabel fitz John Richard fitz John, 1st and last Lord FitzJohn Aveline fitz John Maud FitzJohn, Countess of Warwick Joan fitz John Siblings Geoffrey FitzGeoffrey de Mandeville, 2nd Earl of Essex William FitzGeoffrey de Mandeville, 3rd Earl of Essex Hawise FitzGeoffrey, Lady of Streatley Warin de Munchensy Cecily fitz Geoffrey Maud de Mandeville Partners Isabel Bigod