 It is a Grade II listed building , a national designation given to " buildings of special interest , which warrant every effort being made to preserve them " , in particular because it is " a late Medieval church of exceptionally simple character " , and is virtually unaltered despite its poor condition . One writer has said that St Mary 's " has the distinction of probably being the most isolated church in Anglesey " . 
 It <a href='drop_aux' title='1'><mark>is</mark></a>a Grade II listed building , a national designation given to " buildings of special interest , which warrant every effort being made to preserve them " , in particular because it <a href='drop_aux' title='2'><mark>is</mark></a>" a late Medieval church of exceptionally simple character " , and <a href='drop_aux' title='3'><mark>is</mark></a>virtually unaltered despite its poor condition . One writer <a href='been_done' title='4'><mark>has</mark></a> said that St Mary <a href='null_genetive' title='5'><mark>'s</mark></a>" <a href='got' title='6'><mark>has</mark></a> the distinction of probably being the most isolated church in Anglesey " . 
It a Grade II listed building , a national designation given to " buildings of special interest , which warrant every effort being made to preserve them " , in particular bc it " a late Medieval church of exceptionally simple character " , and virtually unaltered despite its poor condition . One writer done said dat St Mary  " got the distinction of deff being da most isolated church in Anglesey " .