Atticus Finch is a fictional character and the protagonist of Harper Lee's Pulitzer Prize-winning novel of 1960, To Kill a Mockingbird. A preliminary version of the character also appears in the novel Go Set a Watchman, written in the mid-1950s but not published until 2015. Atticus is a lawyer and resident of the fictional Maycomb County, Alabama, and the father of Jeremy "Jem" Finch and Jean Louise "Scout" Finch. He represents the African-American man Tom Robinson in his trial. Lee based the character on her own father, Amasa Coleman Lee, an Alabama lawyer.

Source: Wikipedia