Agonalia

Etymology
An la root. One theory states that, while the festival was later performed in the along the, the Regia used to reside on the , which was formerly known as  and which gave the epithet  to the.

Proper noun

 * 1)  a Roman festival held on January 9th, May 21st, December 11th, and probably March 17th in which the  sacrificed a ram to the gods

Usage notes

 * The festival was supposedly founded by and continued by the  until their removal, at which point the rex sacrorum took the position.
 * The festival of was celebrated in honor of Mars on March 17th, the same day as, and was almost certainly another form of Agōnālia.