R2-D2 was first seen on Amidala's Naboo ship in Episode 1, so Naboo perhaps?

Naboo

Yes, Naboo is the home planet of Padmé Amidala in the Star Wars franchise. Amidala serves as the Queen and later Senator of Naboo in the prequel trilogy.

Jar Jar Binks is a Gungan from the homeworld of Naboo. He was very helpful in assisting the Jedi to free Naboo from the Trade Federation in Episode 1. When Padme Amidala became the senator of Naboo, Jar Jar became a representative in the Senate for Naboo. That's about as much information I can give you.

padme