Your research has produced the name John Sheppard, which belongs to a boy who died at the age of ten in 1977. Interested to know how a dead boy can use a typewriter and order magazines, Lauren will drag you to the cemetery to check out his grave. You can walk around and look at graves, but you won't be able to interact with the one you want until you talk with gravedigger or Lauren talks with a lady visiting the graveyard. The grave you want is the one with white flowers in front of it, just a few graves down from the gravedigger. Alternatively, you can follow Lauren around until she finds it herself. Either way, inspect the flowers and the origami dog you find there, and the gravedigger will come over to tell you how the boy died.