The Jadoon are descended from Ashraf also known as jadoon (Gadoon) of the Panni clan of the Ghurghusht Afghan. Panni, Kakar, Naghar and Dawi were four sons of Daney son of Ismail, also known as Ghurghusht. The people of this tribe call themselves jadoons, but Eastern Afghans who change the letter S`h into K`h and “j” into “G” style them Gadoons as the letter J and G are interchangeable in the Pushto language, just as jillani and Gillani are synonyms. The Jadoons were freedom fighters and they showed bravery against their rivals, especially the Sikhs and the British with other prominent Pashtun tribes of the region like the Swati, Tareens Khaji khail and Shilmani. Their leader Sakhi Jan Jadoon had been martyred during the freedom efforts against the Sikhs in the 19th century

Reference: http://en.wikipedia.org/wiki/Jadoon