Between 1966 and 1972 he produced the periodical Y Cardi. He won the "double" of crown and chair twice, once at the 1977 National Eisteddfod of Wales and again in 1980; he is one of only three poets to have achieved this "double double".
From 1966 to 1972, he published Y Cardi. He won both the crown and chair "double" twice: first at the National Eisteddfod of Wales in 1977 and again in 1980; he is one of only three poets to have accomplished this "double double".