Bhai Mati Das (ਭਾਈ ਮਤੀ ਦਾਸ) is one of the greatest martyrs in Sikh history. He along with his younger brother Bhai Sati Das and Bhai Dyal Das, all disciples of the ninth Sikh Guru, Guru Tegh Bahadur (1621–1675), were executed along with him at the Kotwali(police-station) near the Sunehri Masjid in the Chandni Chowk area of Old ...