Documentation is mainly composed of:
Civil Records (births, marriages and deaths). Usually from 1866 to the present (the last 70 years are protected by privacy laws). They are found in State archives, historical town archives and Vital Records Offices (these last are not freely accessible);
Civil Records of the Borbonic Kingdom (births, marriages and deaths). Usually from 1820 to 1865 in State Archives;
Military Records (Enrollement lists, Service Record Books) usually from the first half of the nineteenth century up to the last 70 years in State Archives;
Notary Records Usually from the 16th to the 20th century in State Archives.
Example 1 - Example 2 - Example 3 - Example 4