If you look up on wikipedia.com and type in his name and it will show you a picture of him, I'm positive. But to save you some time here is the link:
http://en.wikipedia.org/wiki/Christopher_Columbus
Christopher Columbus.
Christopher Columbus is a person
he is like that
dick
Christopher Columbus was both success and failure
what was christopher columbus parents like?
what was Christopher Colombus's training?
When Christopher Columbus was a child, his family was very poor, they moved once.
When Christopher Columbus was a child, his family was very poor, they moved once.
Christopher Columbus.
Just like any other proper noun. I recommend doing something like 'Christopher Columbus... [something he did]... [year he did it].'
Christopher Columbus is a person
he is like that
dick
rainy and cloudy
we feel like it
Christopher Columbus