In 1897 there was a proposal to build a 2ft 6inch gauge electric light railway/tramway from Llanfair P.G. to Beaumaris and then onwards to Llangoed. In April 1898 the Light Railway Commissioners met in Beaumaris to consider the proposal (Llanfair P.G. - Beaumaris only, the continuation to Llangoed had already been dropped). The route would have followed the A5 from Llanfair P.G. to Menai Bridge and then the coastal road to Beaumaris. The county council was reported to be in favour but strong opposition from local landowners prevailed and the Commissioners could not justify submitting an order to the Board of Trade for the line.
Other than the 'luggage tramway' on the Beaumaris Pier and the Saunders-Row 'slipway' that would appear to have been Beaumaris only flirtation with rail/tramways.
It is possible that the landscape features reported by Robin are indeed part of the Barron Hill estate. Pathways for (dry weather) walks and driveways for (wet weather) carriage-drive viewing of oftain very extensive gardens were very popular with the owners of large estates. Who was it said "if you've got it, flaunt it", and there are spectacular views to be had from that general area!
~~~ The future is not what it used to be ~~~