‌*Humphery , Earl of Hereford4 & Essex and *Elizabeth\Isabel , Princess were married in a religious ceremony on November 14th, 1302 in Westminster Abbey,London,ENG.  They had six sons and four daughters, and also a child of unknown gender, named Hugh, John , Earl of Hereford9 & Essex, Humphrey , Earl of Hereford10 Essex, William , Earl of Northampton, Edward, Edmund, Alianore, Mary, *Margaret, Isabella and Eneas.