Jupiter
Jupiter was the chief of the gods for the Romans, the way Zeus was for the Greeks. In fact, they must have originally been the same Indo-European sky god. They really have the same name - Jupiter comes from Ju-pater, which means "Ju-the-father" in Latin. You can see that "Ju" is basically the same name as "Zeus".
The Romans often thought of Jupiter as part of a group of three gods,
Jupiter, Juno, and Minerva.
They seem to have gotten this idea from the Etruscans.
Many Etruscan and Roman
temples were dedicated to
all three of these gods together.
