Some further information which may interest you
http://www.uboat.net/forums/read.php?22,66295,66297
HMS ISIS Fleet Destroyer. Sunk at night while anchored in the English Channel off Normandy on 20th July 1944 by a mine during operation Neptune (Naval Operations in support of Operation Overload). Casualties were heavy -154 men killed. The wreck is located 49-27N 00-41W seven miles north of Arromanches in northern France. Sinking was caused either by a German mine or possibly a 'Neger' human torpedo. At least one crew member is buried at Arromanches.The ship was on anti-submarine patrol off the Western Sector (Normandy Invasion).
LEWIS, CYRIL JOHN
Initials: C J
Nationality: United Kingdom
Rank: Petty Officer Stoker ( or mechanic)
Regiment/Service: Royal Navy
Unit Text: H.M.S. Isis.
Age: 38
Date of Death: 20/07/1944
Service No: D/KX 77524
Additional information: Son of John and Nell Lewis; husband of Helena Theresa Lewis, of Slough, Buckinghamshire.
Casualty Type: Commonwealth War Dead
Grave/Memorial Reference: III. F. 5.
Cemetery: BAYEUX WAR CEMETERY
Country: France
Locality: Calvados
Visiting Information: Parking directly outside the cemetery is limited. When approaching the cemetery with the nearby D-Day Museum on your right, take the last exit at the roundabout just before the cemetery into 'Chemin des Marettes', where space is usually available to park.
Location Information: The town of Bayeux, in Normandy, lies 24 kilometres north-west of Caen. Bayeux War Cemetery is situated in the south-western outskirts of the town on the by-pass (D5), which is named Boulevard Fabian Ware. On the opposite side of the road stands the Bayeux Memorial.
Historical Information: The Allied offensive in north-western Europe began with the Normandy landings of 6 June 1944. There was little actual fighting in Bayeux although it was the first French town of importance to be liberated. Bayeux War Cemetery is the largest Commonwealth cemetery of the Second World War in France and contains burials brought in from the surrounding districts and from hospitals that were located nearby. BAYEUX WAR CEMETERY contains 4,144 Commonwealth burials of the Second World War, 338 of them unidentified. There are also over 500 war graves of other nationalities, the majority German. The BAYEUX MEMORIAL stands opposite the cemetery and bears the names of more than 1,800 men of the Commonwealth land forces who died in the early stages of the campaign and have no known grave. They died during the landings in Normandy, during the intense fighting in Normandy itself, and during the advance to the River Seine in August.
No. of Identified Casualties: 4265
...............and for his certificate of honour
http://www.cwgc.org/search/certificate.aspx?casualty=2327984