 The church is a Grade II * listed building – the second @-@ highest ( of three ) grade of listing , designating " particularly important buildings of more than special interest " . It was given this status on 5 April 1971 , and has been listed because it is " a rural Medieval church retaining its simple character . " It is described by Cadw ( the Welsh Assembly Government body responsible for the built heritage of Wales ) as a church " of typical Anglesey type " , where the 19th @-@ century restoration work has " retained the simplicity of design and construction " , and also the church 's medieval character . 
