Estella was the second child of Odovacar Bolger and Rosamunda Took. She was present at Bilbo's Farewell Party.
Her older brother, Fredegar, was well acquainted with Meriadoc Brandybuck, and Estella eventually married him after the War of the Ring/
Tolkien added Estella to the family trees in Appendix C in the mid-1960s during the revisions that led to the second edition of The Lord of the Rings. For unclear reasons she did not initially appear in the hardcover edition, but Estella was finally added to the hardcover edition after an update to the text in 1987.