Avi Kerensky, on 20 August 2012 - 02:31 AM, said:
Originally (If memory serves), The Star League was before IS and Clan. Someone did something others didn't like, and the original Ilkhan took a segment of forces, and broke off and went his own way. The Clans returned (A LONG time later) in an attempt to reunite all of humanity into the Star League again.
The Clan Bloodnames are all the names of the original warriors who left with the Ilkhan.
To clarify: At the end of the Amaris war, General Aleksaner Kerensky found that the entire Cameron line (rulers of the terran hegemony and the traditional leaders of the Star League) had been exterminated by Stefan Amaris. This created a serious question as to who would lead, and all signs pointed to a brutal civil war between each of the Major Noble houses (Who were also looking hungrily at the devestated and leaderless reamins of the hegemony).
Realizing that the successor states inteneded to disband the starleague and repurpose it for the civil war, Aleksander chose to walk into exile, and 80% of the SLDF would follow him in his journey beyond the edge of known space. These people would eventually become the clans.