One of the republican clans in the time of the Buddha

The Sakyan and the Koliyans were both khattiyas(Kshatriya) of the Adicca (Iksvaku) clan of the solar dynasty. There was no other royal khattiya family equal to them in the region, and therefore, members of the royal families of these two republics married only among themselves. Both clans were very proud of the purity of their royal blood and had practised this tradition of inter-marriage since ancient times. For example, Suddhodana's paternal aunt was married to the Koliyan ruler Anjana. Their daughters, Mahamaya and Mahapajapati Gotami, were married to Suddhodana , the chief of the Sakyans. Similarly, Yashodhara, daughter of Suppabuddha, who was Anjana’s son, was married to the Sakyan prince, Siddhattha. Thus, the two royal families were related by marriage bonds between maternal and paternal cousins since ancient times.In spite of such close blood-ties, there would be occasional rifts between the two royal families, which sometimes turned into open hostility.