The collection held at Churchill Archives Centre includes: letters from Lady Randolph Churchill to her younger son, John S Churchill, and also to Winston Churchill; letters from Lord Randolph Churchill; letters from Winston Churchill; the correspondence of John S Churchill ("Jack"); the correspondence of Jack's wife, Lady Gwendeline Churchill ("Goonie"); letters from Peregrine's elder brother John G Churchill ("Johnny"); letters and papers relating to Peregrine Churchill himself; family photographs; legal and financial papers.