User blog comment:Supahbadmarine/Begone Foul Primarchs!!!/@comment-3245042-20120721171338/@comment-2253300-20120721185756

Sure. The Eternity Guide made sure that all of the Primarchs can across a template for making Space Marines. The Primarchs themselves followed the template to varying degrees. Also the Thousand Sons are fine, but make sure not to make them his empire's only fighting forces.