Wouldn't you know, a quick check of Ancestry.com new databases turns up one
many of you may want to look at: WWI naval deaths.
See: http://www.ancestry.com/ancestry/search/4022.htm
The one Sinclair was actually a Lucious McKelvey, middle name Sinclair:
Search Terms: SINCLAIR (1)
Results ( 1 combined matches)
LAST NAME FIRST NAME MIDDLE NAM DIED DATE OF DE CAUSE OF D NEXT OF
KI RELATIONSH ADDRESS APPOINTED RANK BRANCH
McKelvey Lucius Sinclair naval hosp.,Gulfport,Miss. Oct.13,1918
influenza Hazel McKelvey wife 230 East 49th St.,Portland,Oreg.
Portland,Oreg. landsman for machinists mate U.S.Naval Reserve Force
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