Permission granted by forest_blight to post his and Stercox's solution
Station IX (June 17/18, p. 92)
LONDON, ENGLAND. "Men bicker over the color of flowers" is a clear reference to the War of the Roses (1455-1487), which ended only a few years before the quest date (1517). Fetter Lane is an old street in London, as is Carter Lane (p. 93). p. 95. "St. Swithans" is a reference to St. Swithins Church in London (Cannon St.). All of this -- Carter Lane, Fetter Lane, and St. Swithins -- are/were in the same area of old London on the north shore of the Thames.
They head west toward the Sacred Isle, but they get diverted to Station XI after learning where the coin was minted.