A few fluff discrepancies...
The 22nd Founding occurred in M.37, the millennium after the Minotaurs were founded.
Your Chapter might have participated in the 3rd War for Armageddon but not the 2nd- there were only 3 Chapters who deployed in the 2nd War, the Blood Angels, Salamanders, and the Ultramarines.
I presume the Assassin hired by the 8th Company Captain wasn't an Imperial Assassin (i.e. from one of the Temples- Vindicare, Eversor etc) because you can't just 'hire' one, they work solely for the High Lords of Terra not the Astartes.
The 22nd Founding occurred in M.37, the millennium after the Minotaurs were founded.
Your Chapter might have participated in the 3rd War for Armageddon but not the 2nd- there were only 3 Chapters who deployed in the 2nd War, the Blood Angels, Salamanders, and the Ultramarines.
I presume the Assassin hired by the 8th Company Captain wasn't an Imperial Assassin (i.e. from one of the Temples- Vindicare, Eversor etc) because you can't just 'hire' one, they work solely for the High Lords of Terra not the Astartes.