Bergil was the older son of Beregond of Gondor. A boy of ten at the time of the War of the Ring, he accompanied Peregrin Took when he first arrived in the city of Minas Tirith. In the Lord of the Rings movie trilogy, Bergil and his father were both left out, their deeds transferred to Peregrin and Gandalf.
Bergil who, running errands for the healers of Minas Tirith, told Gandalf where Pippin and the injured Meriadoc Brandybuck were; Merry, suffering from the Black Breath had gotten lost. He was also the one who brought the athelas leaves to Aragorn; at that time, he showed his love for Faramir by bursting into tears. Bergil also kept Merry company while the Captains of the West led their men off to the Black Gate and then escorted him back to the Houses of Healing.
Of Bergil's destiny the novel or its appendices tell nothing. It is probable that he went with his father into Ithilien after the War of the Ring was over. His younger brother Borlas is central to "The New Shadow", the soon-abandoned draft for a Lord of the Rings sequel published in The Peoples of Middle-earth'.