I'm going to do my best to consolidate all our lore into one post, bear with me a moment...
>25th-26th Millennium-- Age of Isolation
Our still unnamed league is founded a means of extracting resources from a mining world.
>M27
We decide on the color yellow.
At some point our League gets really good at making ale.
>010 M30-- Horus Heresy
The Iron Warriors attack our world with a bunch of daemon engines.
A Kharl (going by the Votann name generator their name for now is "Vak Hypek" unless someone comes up with a better name later) manages to slay a huge dragon shapped daemon engine solo, becoming a legend among our league for generations.
>150 M30
Our league forms a strong trade alliance with the Ulumeathic League to better understand daemon engines that attacked them a century ago.
>809 M41
Ulumeathic League is mostly wiped out by Tyranids.
>M41
An unspecified amount of Kin are captured by the Dark Eldar with only one unnamed steeljak being the only survivor.
>999 M41-- Fall of Cadia
Great Rift opens and we are forced out of the galactic core.
>M42
Our league encounters the Tau for the first time, declarers a grudge against them, and starts a conflict that is still ongoing to this day.
I think that's everything so far. Let me know if anyone wants to add anything. Also we still need a name and logo.