The SS. Folia was sunk 7 km off Ram Head on the morning of 11 March 1917.
The Folia was originally named Principello and her official unique number was 136640.
Sources
http://uboat.net/wwi/ships_hit/2223.html
http://www.naval-history.net/WW1LossesBrMS1917.htm
http://www.infomar.ie/data/Shipwrecks/Box42/pdfs/Folia_Final.pdf
http://www.cunardshipwrecks.com/wrecks/folia.html
http://www.crewlist.org.uk/data/vesselsnumview.php?OfficialNumber=136640