Grave Questions

As far as the most recent discovery is concerned, a grave of a boy who would not have been more than seven years old was found. The grave must have belonged to either 15th or 16th century. Just like other graves discovered, this one too had stored items alluding that the kid belonged to a rich family. Interestingly, the graves found were only of rich children. The question was why their graves were dug in the center of nowhere?