Lithuise of Blois was born in Blois, Centre, Loir-et-Cher, France to Stephen Henry and Adela of Normandy

Adela of Normandy

Adela of Normandy also known as Adela of Blois and Adela of England was, by marriage, Countess of Blois, Chartres, and Meaux. She was a daughter of William the Conqueror and Matilda of Flanders...

. She is also known as Adela. She was married Milo I of Montlhéry

Milo I of Montlhéry

Milo I the Great was lord of Montlhéry from 1095 until his death. He was the son of Guy I of Montlhéry and Hodierna of Gometz.The identify of his first wife is unknown. His second wife was Lithuise, daughter of Stephen, Count of Blois...

. Their marriage was a result of a treaty negotiated by Lithuise's mother, Adela of Normandy. Milo was to support Adela against King Louis, and in return, he would marry Lithuise. Not much is known about her, although in 1118 she was divorced from her husband and died shortly after. Her children were:

• Guy Trousseau
  Guy II of Montlhéry
  Guy II Trousseau was lord of Montlhéry. He was the son of Milo I of Montlhéry and Lithuise of Blois, and the elder brother of Milo II of Montlhéry. .Milo had the temperament of a warrior, and went on the First Crusade in 1096...
  
  , lord of Monthléry
• Milo II
  Milo II of Montlhéry
  Milo II of Montlhéry was lord of Bray and Montlhéry, and viscount of Troyes. He was the son of Milo I the Great and Lithuise of Blois, and younger brother of Guy II of Montlhéry....
  
   (died 1118), lord of Montlhéry and Braye
  Braye
  Braye can refer to:* Braye , a river in France* Braye Harbour, the main port of Alderney, in the Channel Islands.Braye is also the name or part of the name of several communes in France:* Braye, Aisne, in the Aisne département...
  
  , viscount of Troyes
• Isabella of Montlhéry, married Thibaut of Dampierre
• Emmeline of Montlhéry (died 1121), married Hugh II Bardoul, lord of Broyes