Carreg fedd John Mackay a llongwr arall nad yw ei enw’n hysbys y cafwyd hyd i’w cyrff ar ôl i’r APAPA gael ei suddo ym 1917 Math Eitemau Uwchlwytho gan Llongau-U
40 Merchant Ships Sunk in German 'War Zone' by Submarines and Mines; 13 British Warships Destroyed, 4,400 Lives Sacrificed in Under-Sea War Math Eitemau Uwchlwytho gan Llongau-U
DEATH OF THRASHER STIRS OUR EMBASSY [...] DERNBURG DEFENDS SUBMARINE RAIDS Math Eitemau Uwchlwytho gan Llongau-U
The Cambank Sunk in the Irish Sea as She Stops to Take Aboard Mersey Pilot Math Eitemau Uwchlwytho gan Llongau-U
U-Boat Sinks Steamship; Only 3 of 250 Are Lost; 57 Y. M. C. A. Men Aboard Math Eitemau Uwchlwytho gan Llongau-U
SAINT PIERRE/MAROC, chwaerlong y SAINT JACQUES a suddwyd ar 15 Medi 1917 Math Eitemau Uwchlwytho gan Llongau-U
