This Day in History: 1256-12-23

On 23rd December 1256, a covenant was agreed between Sir Edmund de Lacy, lord of Pontefract, and Sir William Longspee, Earl of Salisbury, for a marriage between Henry, Edmund’s heir and Margaret, William’s daughter, with a stipulation that if Henry were to die “before contracting the said marriage, then John, the younger son of Edmund shall be married to her”.