Bergil was the son of Beregond, a guard of Minas Tirith. When Gandalf and Pippin were in Minas Tirith, Beregond sent Pippin to find Bergil so he could guide him round the city. Pippin found Bergil playing with some other boys outside the Old Guesthouse in Lampwright’s Street.

"Bergil proved a good comrade, the best company Pippin had had since he parted from Merry".

Together they went to the Great Gate to watch the troops arrive.

After the Battle of the Pelennor Fields, Bergil met up with Pippin again when the hobbit was bringing the injured Merry to the Houses of Healing. Bergil, who was running errands for the healers, was sent by Pippin to give them the message that he had a sick hobbit "come from the battlefields".

It was also Bergil who found six leaves of athelas for Aragorn, thus allowing him to heal Merry, Faramir and Éowyn.

(Quotes from Chapter 1, Minas Tirith, Return of the King)