Philippa de Coucy
Philippa de Coucy , Countess of Oxford , Duchess of Ireland ( before 18 April 1367 – October 1411 ) was a first cousin of King Richard II of England and the wife of his favourite , Robert de Vere , 9th Earl of Oxford , Marquess of Dublin , Duke of Ireland . 
<triplet> Philippa de Coucy <subj> October 1411 <obj> date of death <subj> Robert de Vere, 9th Earl of Oxford, Marquess of Dublin, Duke of Ireland <obj> spouse <triplet> Robert de Vere, 9th Earl of Oxford, Marquess of Dublin, Duke of Ireland <subj> Philippa de Coucy <obj> spouse