Winston Churchill really did visit Canada in the winter of 1900/01 and gave lectures in Toronto to full houses at Massey Hall. He had deep affection for Canada and its people, visiting the country seven times in all.
Thomas Howes is the first Downton Abbey (2010) alumnus to appear as a guest star. Brendan Coyle as Rankin in A Merry Murdoch Christmas (2015), Samantha Bond as Lady Suzanne Atherly in Great Balls of Fire: Part 1 (2016) & Great Balls of Fire: Part 2 (2016), and Sophie McShera as Ayn Rand in Murdoch Mystery Mansion (2018).
Thomas Howe, the actor portraying Winston Churchill is 6 ft 3 in. In actuality oh, Winston Churchill was 5ft 6in
This episode takes place in 1900.