Complex sentence: Doyle also entertained many notable house guests at Undershaw including Sherlock Holmes illustrator Sidney Paget, the famous Sherlock Holmes actor William Gillette and the creator of Dracula, Bram Stoker.
Split into simpler sentences: Doyle also entertained many notable house guests at Undershaw. These included Sherlock Holmes illustrator Sidney Paget, the famous Sherlock Holmes actor William Gillette, and the author of "Dracula", Bram Stoker.