Sweyn

Sweyn's father was Knut "Den Grosse" von England and his mother was Elfgiva von Northampton.  His paternal grandparents were Sweyn Forkbeard and Gunhilda; his maternal grandfather was Alfhelm Earl von Northhampton. He had a brother named Harold I. He had a half-brother and a half-sister, named Hardicanute and Gunhilda.  He died in 1036.