Boniface the Pretender

There were smaller pieces under glass, epaulets belonging to famed commanders out of history, a roundel showing the Imperial sunburst that had purportedly been part of a suit of armor made for Prince Cyrus the Golden . . . the shattered remnants of the White Sword that had executed the pretender Boniface in the fifth millennium.

Tor Paulos, Howling Dark - Chapter 34: In the House of Kharn Sagara

Construction on the Eternal City began early in the sixth millennium under the direction of Emperor Raphael IV while the Empire—and Avalon in particular—was still recovering from the devastation caused by Boniface Grael’s brutal interregnum.

Tor Paulos, Demon in White - The Aventine Dynasty & The Eternal City

Human settlement on Colchis goes back to the fifth millennium ISD, following the Hundred Year Terror, in which House Avent was removed from the throne by Boniface the Pretender. In the wake of that civil war, the newly reinstated Emperor Gabriel II ordered the Imperial Archives moved from Avalon to the newly minted colony of Colchis, then a remote military outpost.

Tor Paulos, Demon in White - On Colchis

The Green Sea (on Gododdin) was not grassland, but hundreds of square miles of fields where the Legions grew their bromos, the genetically engineered oats that have kept billions of our soldiers on their feet since the time of Boniface the Pretender.

Tor Paulos, Demon in White - Chapter 7: Before the Sun Fell