Original sentence: Amis's paternal grandfather was a mustard manufacturer's clerk from Clapham, and his maternal grandfather a shoe millionaire.Born in Oxford, England, Martin was the middle of three children, with an older brother, Philip, and a younger sister, Sally.He attended a number of  different schools in the 1950s and 1960s including Swansea Grammar School, and Cambridgeshire High School for Boys.His parents, Hilary Bardwell and Sir Kingsley Amis, divorced when he was twelve.Martin Amis read comic books until his stepmother, the novelist Elizabeth Jane Howard, introduced him to Jane Austen, a writer he often names as his earliest influence.The acclaim that followed Kingsley's first novel Lucky Jim sent the Amises to Princeton, New Jersey, where Kingsley lectured.This was Amis's introduction to the United States
Edited sentence: Amis was born in Oxford, England.He attended a number of  different schools in the 1950s and 1960s, including Swansea Grammar School, and Cambridgeshire High School for Boys.He had an older brother, Philip, and a younger sister, Sally.His father, Sir Kingsley Amis, was the son of a mustard manufacturer's clerk from Clapham; his mother, Hilary Bardwell (Hilly), was the daughter of a shoe millionaire.Martin Amis read nothing but comic books until his stepmother, the novelist Elizabeth Jane Howard, introduced him to Jane Austen, whom he often names as his earliest influence.Martin Amis's parents divorced when he was twelve.The acclaim that followed Kingsley's first novel Lucky Jim sent the family to Princeton, New Jersey, where Kingsley lectured.This was Martin's introduction to the United States