This site offers an online encyclopedia where you can find information on all the rulers of the Roman Empire since Agustus to Constantine. This encyclopedia has an index showing all the names of the roman emperors, biographical essays on each of them, family trees, and index on important battles in the empire history, their maps and descriptions and maps from the Roman Empire showing its evolution and changes. This site provides useful information on how to make good use of this encyclopedia. It provides several indexes, some sorted out by alphabetical order, from which you can easily find what you are looking for. Also, in this site you can find information on how to get involved with this site to suggest changes or additions. Several links that will redirect you to other WebPages with information related to this subject can be found in this site as well, so as to further inform the reader on the matter.