Empress Matilda (10 September 1167), also known as Empress Maud, was Holy Roman Empress as the consort of Emperor Henry V from 1110 until his death in 1125, and was subsequently a claimant to the English throne, and Lady of the English, during the civil war known as the Anarchy. Following the death of her father, King Henry I of England, as his only surviving child and nominated heir, she asserted her right to the English throne. However, her cousin Stephen of Blois usurped the crown.
Matilda was the eldest child and only surviving daughter of Henry I of England and his first wife, Matilda of Scotland. As a child, she went to Germany where she was married to the future Henry V. She travelled with the emperor to Italy in 1116, was controversially crowned empress in St Peter's Basilica, and acted as the imperial regent in Italy. Matilda and Henry V had no children, and when he died in 1125, his rival Lothair of Supplinburg claimed the imperial crown.
Matilda's brother, William Adelin, died in the White Ship disaster of 1120, leaving Matilda's father and realm facing a potential succession crisis. Upon her widowhood in the Holy Roman Empire, Henry I recalled Matilda to his Duchy of Normandy and arranged for her to marry Geoffrey of Anjou to form an alliance to protect his southern borders in France.
Henry had no further legitimate children and nominated Matilda as his heir, making his court swear an oath of loyalty to her and her successors, but the decision was not popular in his Anglo-Norman court.