A find of what on the face of it looks like a hoard of Roman silver coins and a pair of brass spurs found beneath a quern stone near to the limekiln. Found in 1819 and reported in Archaeologia Cambrensis 1849 thus:
There was a popular tradition very current in the neighbourhood in former times of a large sum of money being concealed under a mill-stone on this property, and many attempts made to discover this hidden treasure.
In 1819, some labourers, who were employed in removing a quantity of loose stones and earth near a lime-kiln at Vaenol, discovered the upper stone of a Quern or hard-mill, about two feet below the surface, and beneath it a collection of silver Roman coins, with a pair of small antique brass spurs, in a high state of preservation. The number of coins found was 73, and the historical period, which they serve to illustrate, embraces an interval of 122 years from the commencement o f the reign of Vespasian to the death of Commodus; of these there were 9 of Vespasian, 6 of Titus, 3 of Domitian (one of which records the celebration of the Ludi Seculares in 84), 3 of Nerva, 16 of Trajan, 10 of Hadrian, 1 of Empress Sabina, 8 of Antonius Pius, 7 of the Empress Faustina, 6 of M. Aurelius Antoninus, 1 of Commodus, 3 unknown. These are now in the collection of T Assheton Smith Esq. M.P. (Arch Camb, 66-7). The locatio of this find probably where the 25 inch OS map shows "Old Quarries", near the Lime kiln (NPRN 421941).

John Latham RCAHMW 7 March 2017.

The present whereabouts of the hoard are unknown. The precise find spot is also unknown but there is apparently only one lime kiln (site 45603) on the estate. The find is reported in the Caernarvonshire Inventory, though the find spot is wrongly located on the distribution map included in that volume (R.C.A.H.M. lvii., 112).