Conversation so far:
Can you provide me with a little information about Walter Winterbottom and Walter Winterbottom's career as an England Team Manager?
Walter Winterbottom has the distinction of being England's first, youngest and longest serving England team manager.
How long did he serve as an England team manager?
his departure in 1966.

Question: How old was he when he first began his career as a team manager?
Self-contained rewrite: How old was Walter Winterbottom when he first began his career as a team manager?