Complex sentence: Norris, whose vigorous political views exercised a deep influence upon his seminary student John Birch and others, later undertook a wide, public ministry; however, the reputation of the Reverend J O L Spracklin never recovered from the events of 1920.
Split into simpler sentences: Norris, whose vigorous political views exercised a deep influence upon his seminary student John Birch and others, later undertook a wide, public ministry. However, the reputation of the Reverend J O L Spracklin never recovered from the events of 1920.