Princess Margaret of England

Princess Margaret was born about 1045.  Princess Margaret's father was Prince Eadward of England and her mother was Agatha of Brunswick.  Her paternal grandparents were King Edmund  II of England and Ealdgyth of Northumbria; her maternal grandparents were Count Liudolf of Brunswick and Gertrude de Gaunt.  She was an only child.

They had a son named King David  I (The Saint).