Eragon--a fifteen year old farm boy-- is shocked when a polished blue stone appears before him in the range of mountains known as the spine. Nothing is known of Eragon's father. (who is later to be reveled to be Morzan by his half-brother Murtagh. Even later, however, it is reveled that his actual father is Brom) His mother, Selena has not been seen since Eragon's birth, since she died shortly after Eragon's birth.
That's technically not a quote from Brisingr, but does describe Eragon's earlier life. Perhaps you should try actually looking into the depths of the book?