The King's Note to Lord Wynton is a tome found in Act V of Diablo III. Written by Justinian IV, it is dropped in Wynton Courtyard by Gorrel after he is defeated during the Noble Deaths event. Obtaining the journal will add to the People Finder achievement.
It reads as follows:
Lord Wynton, we are thrilled that you have located a surviving regiment of soldiers. With this new force, we can turn the tide and save our city. Your disagreements with the crown are well known, but we are glad you can put them aside in this dangerous time. Long live Westmarch!"
This note and The King's Journal complement each other in giving context to the Long Live the King achievement and its constituent events.