<prompt> Translate the following text to EnglishKuna habari chache kuhusu ufalme huo, ingawa imethibitishwa kwamba wakati huo watawa wa Celtic St. Kentigern na St. Herbert walianzisha Ukristo katika eneo hilo.  <response>: Little is known about the kingdom, though it is documented that at this time the Celtic monks St. Kentigern and St. Herbert introduced Christianity to the region. 