In 1953 , after the death of his first wife , he married his longtime colleague in trade union activism , Elfriede Kaiser - Nebgen ( 1890 -- 1983 ) .
Kaiser was married twice .
In 1953 , after the death of Kaiser 's first wife , Kaiser married his longtime colleague in trade union activism , Elfriede Kaiser - Nebgen ( 1890 -- 1983 ) .
Kaiser was married twice .