The rules for this aren't necessarily set in stone, I'm just looking for a way to make this work.
Here's my idea -- since many of these are likely to be figures who didn't exist OTL, I thought we'd do a biographical section per post. Each emperor (other than Augustus) gets a bio with three sections, similar to Suetonius:
I. Life Prior to the Throne
II. Reign as Emperor
III. Personal Life
I thought we'd do twelve of these (so 36 posts or so) before starting another list.
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1. Augustus (726-767 AUC*)
born: Gaius Octavius Thurinus
later named: Gaius Julius Caesar Augustus
2. Vipsanius (767-803)
born: Gaius Vipsanius Agrippa
later named: Gaius Julius Caesar**
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Vipsanius
I. Life Prior to the Throne
Gaius Julius Caesar (734-803 AUC), most commonly known as Gaius Caesar or Caius Caesar, was the oldest son of Marcus Vipsanius Agrippa and Julia the Elder. He was born between 14 August and 13 September or according to other sources in 23 September, with the name Gaius Vipsanius Agrippa, but when he was adopted by his maternal grandfather Roman Emperor Augustus, his name was changed to Gaius Julius Caesar.
His birth father was Marcus Vipsanius Agrippa, a Roman statesman and general. He was a close friend, son-in-law, lieutenant and defense minister to Octavian, the future emperor Caesar Augustus. He was responsible for most of Octavian’s military victories, most notably winning the naval Battle of Actium against the forces of Mark Antony and Cleopatra VII of Egypt.
Gaius was adopted along with his brother Lucius Caesar in 737 by their maternal grandfather, the Roman Emperor Augustus, who named the two boys his heirs. In 758 the Roman plebs agitated for Gaius to be created consul, despite the fact that he was only 14 and had not yet assumed the toga virilis. As a compromise, it was agreed that he should have the right to sit in the Senate House, and he was made consul designatus with the intention that he should assume the consulship in his twentieth year. Gaius was at this point created "Prince of Youth" ("princeps iuventutis"), an honorific that made him one of the symbolic heads of the equestrian order. Lucius, three years his junior, was granted the same honours after the appropriate interval had elapsed. Temples and statues were erected in their honour (as in the case of the Maison Carrée in Nîmes).
In 753, he married his relative, Livilla, daughter of Drusus the Elder and Antonia Minor. (More will be said of this in the third part of his biography.) As he and Gaius were the heirs to Augustus they had promising legal and military careers. Lucius died in Gaul of an illness in 20 August 755, leaving only Gaius as potential heir.
Gaius served in a number of honorable military and political posts. In 753 he was made army commander in the East and made a peace treaty with Phraates V on an island in the river Euphrates. In 754, he was made Consul with Lucius Aemilius Paullus as his colleague. He faced death in the face during an Armenian campaign, and was serving in Germania when he heard news of his grandfather's death.
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*27 BC-14 AD
**OTL, he died 4 AD; here's a picture:
