This unusual gravestone in Colwyn Bay (Bronynant) cemetery commemorates John Mackay, able seaman and another unknown man. Their bodies were washed ashore at Rhos-on-Sea after the APAPA was sunk off Anglesey in 1917.

The wording includes the lines:

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.

Source:
Image reference: MACKAY, JOHN.
Photo created by Marilyn Aspin for The War Graves Project. Permission given by The War Graves Project.