Which American author wrote 'The Age of Innocence'?

The American author who wrote “The Age of Innocence” was Edith Wharton.

Wharton published the novel in 1920, setting it among New York’s wealthy old-money society during the 1870s. The story follows Newland Archer, whose engagement to May Welland is unsettled by the arrival of May’s cousin, Ellen Olenska, a woman separated from her European husband.

The novel’s title is ironic. Its polished manners and strict rules conceal intense social pressure, romantic conflict, and calculated manipulation. Wharton drew on her own experience of upper-class New York society, which gives the book its detailed picture of etiquette, family reputation, marriage, and social exclusion.

The novel was initially serialized in four parts before appearing as a book. In 1921, it won the Pulitzer Prize for Fiction, making Wharton the first woman to receive that award. It is often discussed alongside her other major works, including The House of Mirth and Ethan Frome.