Cratinus the Younger was a comic poet of the Middle Comedy, and was a comtempoary of Plato

Plato

Plato , was a Classical Greek philosopher, mathematician, student of Socrates, writer of philosophical dialogues, and founder of the Academy in Athens, the first institution of higher learning in the Western world. Along with his mentor, Socrates, and his student, Aristotle, Plato helped to lay the...

 and of Corydus. He flourished in the middle of 4th century BC, and as late as 324 BC. Some scholars believe that he even lived into the reign of Ptolemy II Philadelphus

Ptolemy II Philadelphus

Ptolemy II Philadelphus was the king of Ptolemaic Egypt from 283 BCE to 246 BCE. He was the son of the founder of the Ptolemaic kingdom Ptolemy I Soter and Berenice, and was educated by Philitas of Cos...

.

Titles of his plays:

• Gigantes
  Gigantes
  In Greek mythology, the Giants were the children of Gaia, who was fertilized by the blood of Uranus, after Uranus was castrated by his son Cronus...
  
   ("The Giants")
• Theramenes (Theramenes
  Theramenes
  Theramenes was an Athenian statesman, prominent in the final decade of the Peloponnesian War. He was particularly active during the two periods of oligarchic government at Athens, as well as in the trial of the generals who had commanded at Arginusae in 406 BC...
  
  ")
• Omphale
  Omphale
  In Greek mythology, Omphale was a daughter of Iardanus, either a king of Lydia, or a river-god. Omphale was queen of the kingdom of Lydia in Asia Minor; according to Bibliotheke she was the wife of Tmolus, the oak-clad mountain king of Lydia; after he was gored to death by a bull, she continued...
  
   ("Omphale
  Omphale
  In Greek mythology, Omphale was a daughter of Iardanus, either a king of Lydia, or a river-god. Omphale was queen of the kingdom of Lydia in Asia Minor; according to Bibliotheke she was the wife of Tmolus, the oak-clad mountain king of Lydia; after he was gored to death by a bull, she continued...
  
  ")
• Hypobolimaeus ("The Changeling")
• Cheiron ("Chiron
  Chiron
  In Greek mythology, Chiron was held to be the superlative centaur among his brethren.-History:Like the satyrs, centaurs were notorious for being wild and lusty, overly indulgent drinkers and carousers, given to violence when intoxicated, and generally uncultured delinquents...
  
  ")

Many fragments ascribed to Cratinus

Cratinus

Cratinus , Athenian comic poet of the Old Comedy.-Life:Cratinus was victorious six times at the City Dionysia, first probably in the mid- to late 450s BCE , and three times at the Lenaia, first probably in the early 430s...

 were probably by Cratinus

Cratinus

Cratinus , Athenian comic poet of the Old Comedy.-Life:Cratinus was victorious six times at the City Dionysia, first probably in the mid- to late 450s BCE , and three times at the Lenaia, first probably in the early 430s...

the Younger.