Found this on Naval Casualties:
Leinster, passenger ship, torpedoed and sunk by UB.123 in Irish Sea, over 500 lives lost; naval casualties:
BUNDAY, William J, Warship Production Inspector, HM Dockyard Portsmouth, Admiralty civilian
CAMPBELL, George R C, Lieutenant Commander (Compass Department, O/P)
CARR, Josephine, Clerk, WRNS, G 4985
CHRISTY, John, Signalman, RNVR, Mersey Z 1749, (Colleen, Queenstown, O/P)
EADE, Arthur, Sick Berth Attendant, M 4062, (Colleen, O/P)
HOUGH, Fred, Ordinary Seaman, RNVR, Mersey Z 2101
HUGHES, James, Able Seaman, SS 6769 (Dev), (Walrus, destroyer, O/P)
JOYCE, Michael, Leading Stoker, 286505 (Dev), (Hecla, depot ship, O/P)
LANGLEY, Martin, Seaman, RNR, B 4821, (City of London, armed merchant cruiser, O/P)
LEATHERBAROW, George, Leading Seaman, RNR, A 7953
NYHAN, James, Stoker Petty Officer, 307621 (Dev), (Prince, destroyer, O/P)
PILGRIM, Herbert R, Yeoman of Signals, 218657, (Colleen, O/P)
SOLOMONS, David, Air Mechanic 1c, 203095, (19th Training Squadron, RAF, O/P)
STOKES, George E F, Stoker Petty Officer, 311541 (Dev), (Blake, depot ship, O/P)
WHITE, David, Able Seaman (Leading Boatman, Coast Guard), 171678 (Dev), (Pembroke, O/P)
WILLIAMS, Thomas P B, Private, RMLI, 18195 (Ply), (Colleen, O/P)