
1) Ancient Roman festival 2) Festival of Athena
Found on
https://www.crosswordclues.com/clue/quinquatria

In ancient Roman religion, the Quinquatria or Quinquatrus was a festival sacred to Minerva, celebrated on the 19 March. According to Varro, it was so-called because it was held on the fifth (quinqu-) day after the Ides, in the same way as the Tusculans called a festival on the sixth day after the Ides Sexatrus or one on the seventh Septimatrus. Bo...
Found on
http://en.wikipedia.org/wiki/Quinquatria

Religious festival that opened campaigning season.
Found on
http://www.encyclo.co.uk/local/20764
No exact match found.