Most include the name of the deceased, the date of birth and the date of death. Some include the person's significant achievements. Many include quotes or excerpts from holy texts, writings or expressions, or short witty statements.
Source:
WordNet Search - 2.1. Epitaph. Cognitive Science Laboratory. Princeton University. <http://wordnet.princeton.edu/perl/webwn?s=epitaph>
Flanagan M. Definition of Epitaph. Contemporary Literature. About.com <http://contemporarylit.about.com/cs/literaryterms/g/epitaph.htm>
