I walked past the ruins of St. Nidan at Llanidan today.   The church was demolished in 1844 in order to allow the construction of a new Gothic church at Brynsiencyn up the hill in spite of the fact that its origins were Anglo-Saxon and it had been the parish church of Henry Rowlands, the antiquary, who published Mona Antiqua Restaurata in 1723 which claimed erroneously that Anglesey was the centre for the Druids:-

Next door is Llanidan Hall, which is invisible apart from the seventeenth-century stables which were used as the vicarage:-