Bhai Jiwan Singh
Baba Jiwan Singh was a Sikh General and a personal accomplice, companion and friend of Guru Gobind Singh the tenth Guru of the Sikhs. As well as his military prowess he was a poet and a warrior. He eventually became a Sikh Martyr and an icon when he fell during the siege of Chamkaur in 1705 against the Mughal armies. He also taught gatka, shabad kirtan, archery, horse riding, and swimming to Baba Ajit singh .
Bhai Jaita was born to Bhai Sada Nand and Mata Premo at 113 A.M. on the 7th moon day of Poh Bikram Samwat, 1718 i.e. Tuesday,December 1661 CE at Patna Sahib. The Ninth Sikh Guru Guru Tegh Bahadur named the child Jaita.Guru teg bahadur sahib ji love to bhai jaita ji as his own child,even jaita ji study from guru ji on sit on the THAI of GURU TEG BAHADUR SAHIB JI.
Source: Wikipedia