There are Tahitian legends about Pitcairn Island, referred to as Hitiaurevareva, showing that there was travel to and from the island in the past. There are Mangarevan legends also. In the Tahitian legend of Rata, which would be familiar to NZ Māori and other Polynesian people, he goes from Tahiti to Pitcairn to rescue his mother. Tupaia who guided Captain Cook around the pacific, and who acted as translator, drew a map of the Islands he knew and visited and this included Pitcairn. Tupaia was a contempory of the Tahitian women who went on the Bounty to Pitcairn so he had been there in recent history before the Bounty arrived. One of the Tahitian men on the Bounty knew of the island and helped guide Fletcher there. I often wonder why no Polynesians went back after the Bounty settled.