3Henry of Scotland (Eanric mac Dabíd) (1114 – 12 June 1152) was a Prince of Scotland, heir to the Kingdom of Alba. He was also the 3rd Earl of Northumberland and the 3rd Earl of the Honour of Huntingdon and Northampton.
He was the son of King David I of Scotland and Maud, 2nd Countess of Huntingdon. His maternal grandparents were Waltheof, Earl of Northumbria and Huntingdon, (beheaded 1075) and his spouse Judith of Lens.
Henry was named after his uncle, King Henry I of England who had married his paternal aunt Edith of Scotland (the name Edith gallicised as Matilda after becoming Queen consort in 1100). He had three sons, two of whom became King of Scotland, and a third whose descendants were to prove critical in the later days of the Scottish royal house. He also had three daughters.
His eldest son became King of Scots as Malcolm IV in 1153. Henry's second son became king in 1165 on the death of his brother, reigning as William I. Both in their turn inherited the title of Earl of Huntingdon. His third son, David also became Earl of Huntingdon. It is from the 8th Earl that all Kings of Scotland after Margaret, Maid of Norway claim descent.
On Henry's death, the Earldom passed to his half-brother Simon II de Senlis.

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Earl of Huntington; Earl of Northumberland

134Child 1: , Malcolm IV the Maiden of Scotland, King of Scotland, b. 20 MAR 1141/42
Child 2: , William I the Lion of Scotland, King of Scotland, b. 1143
Child 3: , Margaret of Huntingdon, Countess of Hereford
Child 4: , Ada
Child 5: , David of Huntingdon, Earl of Huntingdon 9th, b. ABT 1144
Child 6: , Maud
Child 7: , Isabella
Child 8:
Child 9: , Marjory

3Ada de Warenne (or Adeline de Varenne) (c. 1120–1178) was the Anglo-Norman wife of Henry of Scotland, Earl of Northumbria and Earl of Huntingdon. She was the daughter of William de Warenne, 2nd Earl of Surrey by Elizabeth of Vermandois, and a great-granddaughter of Henry I of France. She became mother to two Kings of Scots, Malcolm the Maiden and William the Lion.

aka: Princess Ada of Scotland

134Child 1: , Malcolm IV the Maiden of Scotland, King of Scotland, b. 20 MAR 1141/42
Child 2: , William I the Lion of Scotland, King of Scotland, b. 1143
Child 3: , Margaret of Huntingdon, Countess of Hereford
Child 4: , Ada
Child 5: , David of Huntingdon, Earl of Huntingdon 9th, b. ABT 1144
Child 6: , Maud
Child 7: , Isabella
Child 8:
Child 9: , Marjory