Out of the great clans of old (CHAOS, AoA, iG, Foxes, AoA, The Hollow, MR, VooDoo) Zaft is the newest by a large degree. I consider Zaft to be the youngest superpower of old KaW.
Listen to Sholron muppets. Has it right. Hollow, AoA and Modern Republic still live as WAR (Warriors of the Ancient Realms) by the way...in case you didn't know
Didn't think we were counting War, misread OP, thought I read longest living clan which would have been iG lol
By saying "Oldest clan IN Kaw" that is perceived as "IN Kaw" currently.. Elite Templars Dark Angels are not currently IN kaw or at least the original clans created are not... Fun fact : Dark Angels split and 1/2 the original admins started another clan currently know as Knights of The Fire Emblem none of the original dark angels still play tho.. Scarlet Shadow was around but disappeared again and Xioxas (original kotfe leader) quit pre- NA/Hollow war Fun thread all the same.
Foxes ans iG both were created in the forums before system clans. They were both also day one System clans. But they are not the oldest. Also was not the first to be credited with making a system clan. From my research that was White Knights. Now White Knights is not the oldest clans. There were clans older than the 3 named above. Case in point, Chaos and The French Knights. Now you can dig deeper to find older forum made clans, though I could not find any answers on that amd I haven't talked in detail to the few day one players that I know about that subject. Zaft is the younger of the older super power clans.