Pellor was a planet in Milky Way galaxy which held a Stargate. Pellor is relatively close to Tollana and one of the Tollan's off-world colonies. Contacts with Tollana were made by both ship and stargate, but were rare enough to protect them when Tollana was destroyed.
Citizens on Pellor sent an expedition to back Tollana after losing communication with the homeworld, and returned to Pellor with more than a dozen survivors. From this point forward, Pellor became the new homeworld of the Tollan Civilization. (RPG: "Living Gods: Stargate System Lords")