http://en.wikipedia.org/wiki/Maud,_Countess_of_Huntingdon

Maud of Northumbria , countess for the Honour of Huntingdon, was the daughter of Waltheof II, Earl of Northumbria and Judith of Lens, the last of the major Anglo-Saxon earls to remain powerful after the Norman conquest of England in 1066. She inherited her father's earldom of Huntingdon and married twice.
Her mother, Judith, refused to marry Simon I of St Liz, 1st Earl of Northampton. This refusal angered her uncle, King William I of England, who confiscated Judith's estates after she fled the country. Instead her daughter Maud was married to Simon of St Liz in 1090. She had a number of children with St Liz including:
1. Matilda of St Liz , married Robert FitzRichard and then Saer de Quincy, 1st Earl of Winchester..
2. Simon II de St Liz, 4th Earl of Huntingdon and Northampton.
3. Saint Walteof de St Liz .
Her first husband died in 1109 and Maud next married King David I of Scotland in 1113. From this marriage she had one son, Henry.
The Scottish House of Dunkeld produced the remaining Earls of Huntingdon of the first creation of the title. She was succeeded to the Earldom of Huntingdon by her son Henry.
According to John of Fordun, she died in 1130 and was buried at Scone, but she appears in a charter dated 1147.