CimiteridiRoma

With this app you can find the tomb of all the famous people buried in the three largest cemeteries of Rome. After selecting the cemetery you can select from the list the character to find and map will show its exact location. If you've turned on the GPS you will see on the map also its position, not being a navigator will not be able to be guided but holding on while you walk you will see your position moving.
There are all the most famous dead people by 2015 and that are present on wikipedia, the map can be to click on the pin and then on the info and you will have access to the wiki page of the chosen character.
For a complete rundown of the famous tombs in Rome just you download the app.