
Karikal Choza, the most famous ancient choza king constructed a yagna kunda in the shape of an eagle according to the Vedic custom- says poet of the Purananuru verse 224.
Karikalan walked seven steps before seeing off his guest according to Rig Vedic custom -says Porunar Atrup Padai line 166.
Read more about which Tamil king did Aswamedha, Which one did Rajasuya etc. in my blog.
More detailed English article is posted today.