Sargeson was born in Hamilton, New Zealand on 23 March 1903, the second of four children. His name at birth was Norris Frank Davey but he would later adopt the surname of his mother, Rachel Sargeson. Although later in life Sargeson became known for his literary depiction of the laconic and unsophisticated New Zealand working-class men, his upbringing was comfortable and middle-class, if puritanical; his father, Edwin Davey, was the Hamilton town clerk and an active campaigner against social ills such as alcohol and gambling. Both his parents were active Methodists.