Sinclair was born in Baltimore, Maryland, to Upton Beall Sinclaira and Priscilla Harden Sinclair. His father was a liquor salesman whose alcoholism shadowed his son's childhood. Priscilla Harden Sinclair was a strict Episcopalian who disliked alcohol, tea, and coffee. As a child, Sinclair slept either on sofas or cross-ways on his parents' bed. When his father was out for the night, he would sleep alone in the bed with his mother. Sinclair did not get along with her when he became older because of her strict rules and refusal to allow him independence. Sinclair later told his son, David, that around Sinclair's 16th year, he decided not to have anything to do with his mother, staying away from her for 35 years because an argument would start if they met. His mother's family was very affluent: her parents were very prosperous in Baltimore, and her sister married a millionaire. Sinclair had wealthy maternal grandparents with whom he often stayed. This gave him insight into how both the rich and the poor lived during the late 19th century. Living in two social settings affected him and greatly influenced his books. Upton Beall Sinclair, Sr., was from a highly respected family in the South, but the family was financially ruined by the Civil War, disruptions of the labor system during the Reconstruction era, and an extended agricultural depression.