Mathura is ruled by Kansa who claimed the throne by killing off seven of his nephews. The eighth child was whisked away to safety and grows up to become Lord Krishna.Mathura is ruled by Kansa who claimed the throne by killing off seven of his nephews. The eighth child was whisked away to safety and grows up to become Lord Krishna.Mathura is ruled by Kansa who claimed the throne by killing off seven of his nephews. The eighth child was whisked away to safety and grows up to become Lord Krishna.