Well, different ages for the different servers. I guess MajestiC might be one of the oldest Teos AoL guilds still around. sovereignty was founded in September 2009, but its roots go back to October 2008 and illuminati/RosenKreutz. Still, loads of old Teos guilds would be sure to beat that. Anime would be another, and -Eternity- too.
SeasonsEnd/MadManMoon/Uigeadail - retired from Shaiya as of May 10th 2014.