They descended from ancestor Kaku (काकू).
H.A. Rose writes that The term Kakuana is for Kumhars in the Sandal Bar in Jhang. They are found as cultivators in many rahnas or hamlets, and also have rahnas of their own to which they have gathered to avoid the begār laid on them in other villages. They are called Kakuana, and say they are not Kumhars, but Jats, descended from one Kaku : and that they took to pot-making a few generations ago. 
Back to Jat Gotras