sentences:  In the 1920s, Sigrid Undset resided there for a brief period.Written in the direct aftermath of Undset's conversion to the Catholic Church, the tetralogy presents in a clearly favorable light the Medieval Church with its institutions and rituals; the saintly Bishop Thorfinn of Hamar as well as nearly all priests and monks appearing in the four books are positive characters.The series' central theme is also preeminently Catholic