How many children did Tantalus have?

Answer 1

Tantalos and his wife, Dione, has 3 children: one daughter and two sons. They were:

Niobe: The eldest child of Tantalos made the mistake of boasting that because she was so incredibly fertile (she had 6 sons and 6 daughters) that her children were superior to the children of Leto (mother to the twins Apollo and Artemis). So Leto bid that her children punish Niobe by slaughtering her children.

Broteas: The oldest son of Tantalos who refused to honor Artemis. She had him driven mad, and while in this state, he made the mistake of assuming himself invulnerable. He leapt into a fire and there perished.

Pelops: This is the son Tantalos killed and cooked in order to feed the gods. Only Demeter partook of the feast. The gods had Clotho restore the youth to life and Hephaestos created a new shoulder out of ivory for him.

Answer 2

Three.

However, Tantalus was not a god, although he is said to be a son of Zeus (he was also said to have a mortal father as well, similar to Theseus). His children were Pelops, Niobe and Broteas.