Koon Karavas in Sri Lankan history were another clan of the Karavas similar to the Suriya clans Kurukulasuriya, Warnakulasuriya, Mihindukulasuriya, Bharathakulasuriya, Manukulasuriya, Arasakulasuriya and Konda Karavas.
Some of these names are Samarakoon, Weerakoon and Wijekoon.
The Sri Lankan chronicle Rajavaliya says that Matara was given to Samarakoon Ralahami for exceptional valor at war.
References
Koon Karavas Wikipedia(Text) CC BY-SA