Gyda Torkelsdotter was the daughter of Torkel Styrbjörnsson who was the son of Styrbjörn Starke and Tyra, the daughter of Harold Bluetooth.
Gyda Torkelsdotter was the daughter of Torkel Styrbjörnsson. Consequently she was the granddaughter of the disinherited Swedish prince Styrbjörn Starke, the conqueror of Jomsborg, and Tyra, the daughter of Harold Bluetooth.