Brief History of the Agikuyu - the characteristics of the tribe

The clans of the Kikuyu had different attributes and performed different roles to the collective harmony of the whole tribe,Nyumba ya Mumbi

Anjiru: Wira wao ni wa kuhingira thu cia ruriri, magongona ma
kurathima mbutu cia mbara 

They are the defenders and offer sacrifices for warriors before war

Ambui: Kuiyira na guthiganira ruriri hitho cia thu na Kwenda
unene kana utongoria

They are the spies in the land and always seek leadership

Agaciku: Atahiri a ruriri, Nimendete muno gukiana 

They are very good brokers and negotiators

Aceera: Aciririri a ruriri, gutugania na kanua na ciugo njega no
kuheana kindu ni hinya 

They are good lawyers and have a very sweet tongue. However, they are very mean

Airimu kana Agathigia: Kuhingira thu na ihooto rurini-ini

They are defenders of the land

Ambura kana Ethaga/Akiuru: Kurumanira thu cia ruriri aingi ni arigitani na mari
mithaiga na urogi

They are doctors but are also thought to be witchdoctors

Angari kana Aithekahuno: Ni agwimi a ruriri , ni hinga.

They are investigators in the community (CID)

Angui kana Aithiegeni: Aigwithania agutwara uhoro kiama-ini.

They are messengers in the land

Angeci kana Aithera andu: Thigari cia ruriri. 
They are the warriors who protect the land

Aica Kamuyu: Athii na gutega na aingi ao makoragwo mari
arogi.

They are witches

Conclusion

The clans are all equal and none is greater or more privileged that the other. The Mihiriga seem to have played different roles all towards one social network.  Gakaara wa Wanjau in his book in 1967, he gives different attributes that were given to each clan and it seems more of the role each played in the Agikuyu nation.