One of these is that each of the five vampire had one child each while still mortal, which carried the vampire blood of it's parent on to it's own children. And they passed it on to theirs, and so on. After a while the blood was only passed to some children, and it could be missing for generations before it suddently showed up again.

Another, which is less known, is that it was named after the five at random, and that in truth there used to be even more bloodlines. It is said that these five rose to be leaders, and that they formed the first High Counsil. How the lines came to be named after them, and what happened to the other lines, is unknown, and few dare to speculate.

The lines were divided during the War of the Lines, and when the war was over, the three Greek lines (Ajax, Acacia and Aletha) came out victorious. Since that day the Head of their lines have been on the High Counsil, and it is the Greek lines that make the vampire laws, and enforces them.

The animosity between the three Greek lines and the remaining two, the Latin lines (Arden and Avalon), has been strong ever since the war. In time it has became a part of the bloodline itself. The hatred now lies in the blood of each new vampire who is born. When someone from the Latin lines meets, or is close to, a member of the gree lines, they will feel the hatred between the lines before they are even aware the other vampire is there.

In order to keep the purity of the lines, one is not allowed to make a member of another line immortal. While it is not law, it is customary to bring each new mortal vampire to the Head of his or her line, before the choice to make him/her immortal is made. It is also usually the Head of the line who performs this act, though it has been known to be done by other members of the line.