Elizabeth de Quincy Peerage person ID=5226 Parents Roger de Quincy, 2nd Earl of Winchester Helen of Galloway Children Elizabeth Comyn John Comyn, Earl of Buchan Alexander Comyn William Comyn Agnes Comyn Elena Comyn Magjory Comyn Siblings Helen de Quincy Margaret de Quincy, Countess of Derby Partners Alexander Comyn, Earl of Buchan