What is the name of the disloyal goatherd who supplies the suitors?

The disloyal goatherd who supplies the suitors is Melanthius.

Melanthius is an enslaved goatherd in Ithaca and a minor but important character in Homer’s Odyssey. While Odysseus is absent, Melanthius supports the suitors occupying Odysseus’s household. He supplies them with the best goats from the herd and serves them in the hall, where he pours wine and carries out their orders.

His disloyalty is also personal and contemptuous. When Odysseus returns disguised as a beggar, Melanthius encounters him on the road and insults him, even kicking him. He does not recognize that the stranger is his own master. Later, he denies responsibility for bringing the disguised Odysseus into the palace and helps the suitors by obtaining weapons during the final battle.

Melanthius is easy to mix up with Melantho, his sister. Melantho is a disloyal female servant associated with Eurymachus, whereas Melanthius is the male goatherd. The loyal herdsmen are Eumaeus, the swineherd, and Philoetius, the cowherd; they assist Odysseus instead. After the suitors’ defeat, Melanthius receives a brutal punishment for his betrayal.