Anthony Trollope (1815–1882) was one of the most successful, prolific and respected English novelists of the Victorian era. Some of his best-loved works, collectively known as the Chronicles of Barsetshire, revolve around the imaginary county of Barsetshire. He also apparently wrote perceptive novels on political, social, and gender issues and on other topical matters. I must admit he remains untouched by me but noted fans have included Sir Alec Guinness, Harold Macmillan, Sir John Major, John Kenneth Galbraith and Lord Denning. Trollope's literary reputation dipped somewhat during the last years of his life, but he regained the esteem of critics by the mid-twentieth century.
Bonhoeffer uses a similar phrase 'worldly Christianity'. It's J Gresham Machen that I want to line up most closely with. See his Christianity and culture here. Having done commentaries on Proverbs (Heavenly Wisdom) and Song of Songs (Heavenly Love), a matching title for Ecclesiastes would be Heavenly Worldliness. For my stance on worldliness, see 3 posts here.