Woodrow Wilson, 27th President (even though Wikipedia says 28) (1913-1920), oversaw our involvement in World War 1 and championed The League Of Nations.

If you've never heard him speak (and I suspect a lot of you haven't), here is a campaign address from the 1912 election, when he ran against the third party candidate Teddy Roosevelt (the other Peace Prize recipient - coming up shortly). He's speaking about the role of Labor.

Now you know.