Parentalia probably comes to and end with the festival of Caristia, which was a sort of 'kiss and make up' festival. The idea was that people had made peace with their dead, so now it was right to bring to an end any quarrels they were having with living members of their family. There was usually a big family reunion type banquet and worship was given to the Lares.
4 A.D. -- death of hoped-for-successor-to-Augustus Gaius Caesar (either February 21 or 22) in Limyra
c. 1st century A.D. -- martyrdom of Aristion, place disputed
1756 -- birth of Gilbert Wakefield (Classicist)