Hmm, I can think of more.
Protect:
Frederick Barbarossa, 1190
Albert Sidney Johnston, 1862
Zhang Zuolin, 1928
Huey Long, 1936
Assassinate:
Kilij Arslan II, 1176
Andronikos Komnenos, 1182
Simon de Montfort, 1244
Murad II, 1444
Franklin Pierce, 1853
Jacob Schiff, 1900
Arthur Zimmermann, 1916...