Original: Virgil 's biographical tradition is thought to depend on a lost biography by Varius , Virgil 's editor , which was incorporated into the biography by Suetonius and the commentaries of Servius and Donatus , the two great commentators on Virgil 's poetry .
Simplified: Some scholars have noted that his cognomen , or nickname , MARO , is an anagram of the two main themes in the Aeneid : AMOR ( love ) and ROMA ( Rome ) .