Complex sentence: Fred was manager of the Kenora Thistles for both the challenge for the Stanley Cup in 1905 (losing to Ottawa) and for of their 1907 Stanley Cup championship.
Split into simpler sentences: Fred was manager of the Kenora Thistles when the challenge for the Stanley Cup in 1905 losing to Ottawa. Hudson was still the Thistles' team manager at the time of their 1907 Stanley Cup championship.