Guru Tegh Bahadur was the ninth Sikh guru who traveled extensively throughout India and surrounding areas to spread the teachings of Guru Nanak. He visited many holy sites and founded Sikh temples and community centers in the places he traveled. Guru Tegh Bahadur sacrificed his life defending religious freedom for all, earning him the name "Hind di Chaadar," or "Shield of India." He had a son, Guru Gobind Singh, who became the tenth Sikh guru.