Mae’r garreg fedd anarferol hon ym mynwent Bae Colwyn (Bronynant) yn coffáu John Mackay, llongwr abl, a dyn anhysbys arall. Cafodd eu cyrff eu golchi i’r lan yn Llandrillo-yn-Rhos ar ôl i’r APAPA gael ei suddo oddi ar Ynys Môn ym 1917.

Mae’r geiriau’n cynnwys y llinellau:

In Memory of John Mackey [sic], Leeds, Able Seaman.
Also a man whose name is unknown.
They both perished through the sinking of the British Passenger Steamer "Apapa" by a German Submarine on 28th Nov 1917.
Their bodies were washed ashore by Rhos on Sea.
They died for their Country.

Ffynhonnell:
Cyfeirnod llun: MACKAY, JOHN.
Crëwyd y ffotograff gan Marilyn Aspin ar ran The War Graves Project. Rhoddwyd caniatâd gan The War Graves Project.